المؤلفون: Attias, Nina, Raíces, Daniel S. L., Pessoa, Flávia S., Albuquerque, Hermano, Jordão-Nogueira, Tássia, Modesto, Thiago C., Bergallo, Helena de G.

المصدر: Zoologia (Curitiba). June 2009 26(2)

مصطلحات موضوعية: Ecoregions, climatic variables, distribution models, altitude

الوصف: The spiny rats of the genus Trinomys Thomas, 1921 have a broad distribution in the Atlantic Forests of southeastern Brazil. However, some species are known only from their type locality and adjacent areas. In our study, nine areas in the state of Rio de Janeiro were surveyed and three species of the genus were captured - Trinomys dimidiatus (Günther, 1877), T. setosus (Desmarest, 1817) and T. gratiosus bonafidei (MOOJEN, 1948). We extended the distribution of T. gratiosus bonafidei in 100 km, in a straight line to the northwest, and into an area of Semidecidual Seasonal Forest. We captured T. setosus, which had not been previously recorded in the state, in the municipality of Cambuci, extending its distribution 150 km, in a straight line to the east of its closest record, in Juiz de Fora, state of Minas Gerais. The state of Rio de Janeiro has now six recognized species of Trinomys, however none of them were collected above 1300 m of altitude. We used occurrence points provided by our inventories data and from the literature to model the potential distribution of Trinomys species. We used climatic, topographic and phytogeographic variables to prepare the potential distribution maps. The algorithm used for modeling was provided by the software Maxent, version 3.2.1. Although species boundaries within Trinomys in Rio de Janeiro State are not yet clear, their distributions seem to be parapatric, except for T. iheringi and T. dimidiatus.

وصف الملف: text/html

الوصول الحر: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702009000200013Test

المؤلفون: Broekman, Maarten JE, Hilbers, Jelle P, Huijbregts, Mark AJ, Mueller, Thomas, Ali, Abdullahi H, Andrén, Henrik, Altmann, Jeanne, Aronsson, Malin, Attias, Nina, Bartlam‐Brooks, Hattie LA, Beest, Floris M, Belant, Jerrold L, Beyer, Dean E, Bidner, Laura, Blaum, Niels, Boone, Randall B, Boyce, Mark S, Brown, Michael B, Cagnacci, Francesca, Černe, Rok, Chamaillé‐Jammes, Simon, Dejid, Nandintsetseg, Dekker, Jasja, Desbiez, Arnaud LJ, Díaz‐Muñoz, Samuel L, Fennessy, Julian, Fichtel, Claudia, Fischer, Christina, Fisher, Jason T, Fischhoff, Ilya, Ford, Adam T, Fryxell, John M, Gehr, Benedikt, Goheen, Jacob R, Hauptfleisch, Morgan, Hewison, AJ Mark, Hering, Robert, Heurich, Marco, Isbell, Lynne A, Janssen, René, Jeltsch, Florian, Kaczensky, Petra, Kappeler, Peter M, Krofel, Miha, LaPoint, Scott, Latham, A David M, Linnell, John DC, Markham, A Catherine, Mattisson, Jenny, Medici, Emilia Patricia, Mourão, Guilherme Miranda, Van Moorter, Bram, Morato, Ronaldo G, Morellet, Nicolas, Mysterud, Atle, Mwiu, Stephen, Odden, John, Olson, Kirk A, Ornicāns, Aivars, Pagon, Nives, Panzacchi, Manuela, Persson, Jens, Petroelje, Tyler, Rolandsen, Christer Moe, Roshier, David, Rubenstein, Daniel I, Saïd, Sonia, Salemgareyev, Albert R, Sawyer, Hall, Schmidt, Niels Martin, Selva, Nuria, Sergiel, Agnieszka, Stabach, Jared, Stacy‐Dawes, Jenna, Stewart, Frances EC, Stiegler, Jonas, Strand, Olav, Sundaresan, Siva, Svoboda, Nathan J, Ullmann, Wiebke, Voigt, Ulrich, Wall, Jake, Wikelski, Martin, Wilmers, Christopher C, Zięba, Filip, Zwijacz‐Kozica, Tomasz, Schipper, Aafke M, Tucker, Marlee A

المصدر: Global Ecology and Biogeography. 31(8)

مصطلحات موضوعية: Climate Action, expert opinion, GPS, habitat suitability, habitat type, habitat use, IUCN, mammals, movement, selection ratio, telemetry, Ecology

الوصف: AimMacroecological studies that require habitat suitability data for many species often derive this information from expert opinion. However, expert-based information is inherently subjective and thus prone to errors. The increasing availability of GPS tracking data offers opportunities to evaluate and supplement expert-based information with detailed empirical evidence. Here, we compared expert-based habitat suitability information from the International Union for Conservation of Nature (IUCN) with habitat suitability information derived from GPS-tracking data of 1,498 individuals from 49 mammal species.LocationWorldwide.Time period1998-2021.Major taxa studiedForty-nine terrestrial mammal species.MethodsUsing GPS data, we estimated two measures of habitat suitability for each individual animal: proportional habitat use (proportion of GPS locations within a habitat type), and selection ratio (habitat use relative to its availability). For each individual we then evaluated whether the GPS-based habitat suitability measures were in agreement with the IUCN data. To that end, we calculated the probability that the ranking of empirical habitat suitability measures was in agreement with IUCN's classification into suitable, marginal and unsuitable habitat types.ResultsIUCN habitat suitability data were in accordance with the GPS data (> 95% probability of agreement) for 33 out of 49 species based on proportional habitat use estimates and for 25 out of 49 species based on selection ratios. In addition, 37 and 34 species had a > 50% probability of agreement based on proportional habitat use and selection ratios, respectively.Main conclusionsWe show how GPS-tracking data can be used to evaluate IUCN habitat suitability data. Our findings indicate that for the majority of species included in this study, it is appropriate to use IUCN habitat suitability data in macroecological studies. Furthermore, we show that GPS-tracking data can be used to identify and prioritize species and habitat types for re-evaluation of IUCN habitat suitability data.

وصف الملف: application/pdf

الوصول الحر: https://escholarship.org/uc/item/7f20t5h7Test

المؤلفون: Attias, Nina, Miranda, Flávia R., Sena, Liana M.M., Tomas, Walfrido M., Mourão, Guilherme M.

المصدر: Zoologia (Curitiba). January 2016 33(4)

مصطلحات موضوعية: Digging behavior, ecology, Xenarthra

الوصف: It is believed that the two species of Tolypeutes Illiger, 1811are the only armadillos that do not dig their own burrows, and that these species simply re-use burrows dug by other species. Here, we show that Tolypeutes matacus (Desmarest, 1804) and Tolypeutes tricinctus (Linnaeus, 1758) dig their own burrows. We describe the burrows and three other types of shelters used by them, and provide measurements and frequency of use of the different types of shelter. We have studied free-ranging individuals of T. matacus in two locations in Central Brazil and individuals of T. tricinctus in semi-captivity in the Northeast of Brazil. Individuals of T. matacus were found primarily in small burrows (76%), straw nests (13%), shallow depressions covered with leaf-litter (7%) or in straw nests made on shallow depressions (4%). Adult males and females of T. matacus did not differ in frequency of use of different types of shelter. Sub-adults T. matacus used shallow depressions and nests more often (40%) than adults (22%) and nurslings (10%). Nurslings of T. matacus reused the shelters more frequently (66%), than sub-adults (46%) and adults (35%). Adult females reused burrows and other types of shelter more frequently than adult males. Tolypeutes tricinctus rested mainly in burrows and under leaf-litter, but did not dig depressions or build nests. Tolypeutes tricinctus occasionally used burrows dug by Euphractus sexcinctus (Linnaeus, 1758), but T. matacus never used burrows dug by other species. Nursling T. matacus always shared shelter with an adult female therefore, both used shelters with similar frequency. Adult females and nurslings of T. matacus reused shelters in higher frequency. That can be explained by the fact that adult females with offspring tend to remain for consecutive nights in the same burrow when cubs are recently born. Due to their smaller body size, sub-adult T. matacus used shelter strategies that require less energetic effort more frequently than adults and nurslings. The habit of covering the burrow entrance with foliage and the burrow's reduced depth, indicates that Tolypeutes use of burrows is more likely to be related to parental care behavior and thermoregulation strategies than to defense mechanisms. We are confident that the burrows used for resting were indeed dug by Tolypeutes because, besides the direct observation of armadillos digging burrows, the measures of the burrows are very distinctive from those presented as characteristic for the co-occurring burrowing species and are congruent with Tolypeutes size and carapace shape. The newly acquired knowledge that species of Tolypeutes dig burrows can be used to increase the well-being of individuals kept in captivity by adapting enclosures to enable their digging behavior. In addition, this information contributes not only to the study of the ecology and natural history of the species, but can shed new light on the study of the anatomy of specialized diggers. Tolypeutes spp. can comprise the least fossorial of all living armadillo species, but they can no longer be classified as non-diggers.

وصف الملف: text/html

الوصول الحر: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702016000404001Test

المؤلفون: Noonan, Michael J, Fleming, Christen H, Tucker, Marlee A, Kays, Roland, Harrison, Autumn‐Lynn, Crofoot, Margaret C, Abrahms, Briana, Alberts, Susan C, Ali, Abdullahi H, Altmann, Jeanne, Antunes, Pamela Castro, Attias, Nina, Belant, Jerrold L, Beyer, Dean E, Bidner, Laura R, Blaum, Niels, Boone, Randall B, Caillaud, Damien, Paula, Rogerio Cunha, la Torre, J Antonio, Dekker, Jasja, DePerno, Christopher S, Farhadinia, Mohammad, Fennessy, Julian, Fichtel, Claudia, Fischer, Christina, Ford, Adam, Goheen, Jacob R, Havmøller, Rasmus W, Hirsch, Ben T, Hurtado, Cindy, Isbell, Lynne A, Janssen, René, Jeltsch, Florian, Kaczensky, Petra, Kaneko, Yayoi, Kappeler, Peter, Katna, Anjan, Kauffman, Matthew, Koch, Flavia, Kulkarni, Abhijeet, LaPoint, Scott, Leimgruber, Peter, Macdonald, David W, Markham, A Catherine, McMahon, Laura, Mertes, Katherine, Moorman, Christopher E, Morato, Ronaldo G, Moßbrucker, Alexander M, Mourão, Guilherme, O'Connor, David, Oliveira‐Santos, Luiz Gustavo R, Pastorini, Jennifer, Patterson, Bruce D, Rachlow, Janet, Ranglack, Dustin H, Reid, Neil, Scantlebury, David M, Scott, Dawn M, Selva, Nuria, Sergiel, Agnieszka, Songer, Melissa, Songsasen, Nucharin, Stabach, Jared A, Stacy‐Dawes, Jenna, Swingen, Morgan B, Thompson, Jeffrey J, Ullmann, Wiebke, Vanak, Abi Tamim, Thaker, Maria, Wilson, John W, Yamazaki, Koji, Yarnell, Richard W, Zieba, Filip, Zwijacz‐Kozica, Tomasz, Fagan, William F, Mueller, Thomas, Calabrese, Justin M

المصدر: Conservation Biology. 34(4)

مصطلحات موضوعية: Generic health relevance, Life on Land, Animals, Body Size, Conservation of Natural Resources, Endangered Species, Homing Behavior, Humans, Mammals, allometry, animal movement, area-based conservation, autocorrelation, home range, kernel density estimation, reserve design, scaling, alometría, autocorrelación, conservación basada en áreas, diseño de reserva, distribución local, escalamiento, estimación de densidad del núcleo, movimiento de mamíferos, 保护区设计, 动物移动, 区域保护, 家域, 异速增长, 标度, 核密度估计, 自相关, Environmental Sciences, Biological Sciences, Agricultural and Veterinary Sciences, Ecology

الوصف: Accurately quantifying species' area requirements is a prerequisite for effective area-based conservation. This typically involves collecting tracking data on species of interest and then conducting home-range analyses. Problematically, autocorrelation in tracking data can result in space needs being severely underestimated. Based on the previous work, we hypothesized the magnitude of underestimation varies with body mass, a relationship that could have serious conservation implications. To evaluate this hypothesis for terrestrial mammals, we estimated home-range areas with global positioning system (GPS) locations from 757 individuals across 61 globally distributed mammalian species with body masses ranging from 0.4 to 4000 kg. We then applied block cross-validation to quantify bias in empirical home-range estimates. Area requirements of mammals 1, meaning the scaling of the relationship changed substantially at the upper end of the mass spectrum.

وصف الملف: application/pdf

الوصول الحر: https://escholarship.org/uc/item/7hv9r8ffTest

المؤلفون: Modesto, Thiago Carvalho, Pessôa, Flávia Soares, Enrici, Maria Carlota, Attias, Nina, Jordão-Nogueira, Tássia, Costa, Luciana de Moraes, Albuquerque, Hermano Gomes, Bergallo, Helena de Godoy

المصدر: Biota Neotropica. December 2008 8(4)

مصطلحات موضوعية: biodiversidade, Brachyteles arachnoides, mastofauna, Mata Atlântica, Thaptomys nigrita

الوصف: Mesmo após a devastação de grande parte das suas matas, o Estado do Rio de Janeiro ainda abriga uma grande riqueza de mamíferos terrestres. Contudo, informações sobre abundância e distribuição da mastofauna do Estado ainda são escassas. Este estudo tem como objetivo inventariar os mamíferos do Parque Estadual do Desengano, localizado na região norte do Estado do Rio de Janeiro, uma das regiões menos amostradas e mais alteradas do Estado. O inventário foi realizado utilizando armadilhas do tipo Sherman e Tomahawk, e armadilhas de queda para os pequenos mamíferos não-voadores, redes de neblina para os morcegos, armadilhas fotográficas, avistamentos e relatos de moradores e funcionários do Parque para os mamíferos de maior porte. Nós registramos 56 espécies de mamíferos, das quais 15 constam na lista da fauna ameaçada de extinção do Estado do Rio de Janeiro e 10 na lista da fauna brasileira ameaçada de extinção, incluindo Brachyteles arachnoides. As espécies mais abundantes foram o morcego Sturnira lilium e o roedor Akodon serrensis. Além disso, Thaptomys nigrita, roedor normalmente pouco capturado no Estado, foi relativamente abundante no Parque Estadual do Desengano. Nossos resultados indicam que o Parque abriga 33,7% das espécies de mamíferos com ocorrência conhecida para o Estado, destacando a importância da área para a conservação da fauna do Rio de Janeiro.

وصف الملف: text/html

الوصول الحر: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032008000400015Test

المؤلفون: Tucker, Marlee A., Schipper, Aafke M., Adams, Tempe S. F., Attias, Nina, Avgar, Tal, Babic, Natarsha L., Barker, Kristin J., Bastille-Rousseau, Guillaume, Behr, Dominik M., Belant, Jerrold L., Beyer, Dean E., Blaum, Niels, Blount, J. David, Bockmühl, Dirk, Pires Boulhosa, Ricardo Luiz, Brown, Michael B., Buuveibaatar, Bayarbaatar, Cagnacci, Francesca, Calabrese, Justin M., Černe, Rok, Chamaillé-Jammes, Simon, Chan, Aung Nyein, Chase, Michael J., Chaval, Yannick, Chenaux-Ibrahim, Yvette, Cherry, Seth G., Ćirović, Duško, Çoban, Emrah, Cole, Eric K., Conlee, Laura, Courtemanch, Alyson, Cozzi, Gabriele, Davidson, Sarah C., DeBloois, Darren, Dejid, Nandintsetseg, DeNicola, Vickie, Desbiez, Arnaud L. J., Douglas-Hamilton, Iain, Drake, David, Egan, Michael, Eikelboom, Jasper A.J., Fagan, William F., Farmer, Morgan J., Fennessy, Julian, Finnegan, Shannon P., Fleming, Christen H., Fournier, Bonnie, Fowler, Nicholas L., Gantchoff, Mariela G., Garnier, Alexandre, Gehr, Benedikt, Geremia, Chris, Goheen, Jacob R., Hauptfleisch, Morgan L., Hebblewhite, Mark, Heim, Morten, Hertel, Anne G., Heurich, Marco, Hewison, A. J. Mark, Hodson, James, Hoffman, Nicholas, Hopcraft, J. Grant C., Huber, Djuro, Isaac, Edmund J., Janik, Karolina, Ježek, Miloš, Johansson, Örjan, Jordan, Neil R., Kaczensky, Petra, Kamaru, Douglas N., Kauffman, Matthew J., Kautz, Todd M., Kays, Roland, Kelly, Allicia P., Kindberg, Jonas, Krofel, Miha, Kusak, Josip, Lamb, Clayton T., LaSharr, Tayler N., Leimgruber, Peter, Leitner, Horst, Lierz, Michael, Linnell, John D.C., Lkhagvaja, Purevjav, Long, Ryan A., López-Bao, José Vicente, Loretto, Matthias-Claudio, Marchand, Pascal, Martin, Hans, Martinez, Lindsay A., McBride, Roy T., McLaren, Ashley A.D., Meisingset, Erling, Melzheimer, Joerg, Merrill, Evelyn H., Middleton, Arthur D., Monteith, Kevin L., Moore, Seth A., Van Moorter, Bram, Morellet, Nicolas, Morrison, Thomas, Müller, Rebekka, Mysterud, Atle, Noonan, Michael J, O’Connor, David, Olson, Daniel, Olson, Kirk A., Ortega, Anna C., Ossi, Federico, Panzacchi, Manuela, Patchett, Robert, Patterson, Brent R., de Paula, Rogerio Cunha, Payne, John, Peters, Wibke, Petroelje, Tyler R., Pitcher, Benjamin J., Pokorny, Boštjan, Poole, Kim, Potočnik, Hubert, Poulin, Marie-Pier, Pringle, Robert M., Prins, Herbert H.T., Ranc, Nathan, Reljić, Slaven, Robb, Benjamin, Röder, Ralf, Rolandsen, Christer M., Rutz, Christian, Salemgareyev, Albert R., Samelius, Gustaf, Sayine-Crawford, Heather, Schooler, Sarah, Şekercioğlu, Çağan H., Selva, Nuria, Semenzato, Paola, Sergiel, Agnieszka, Sharma, Koustubh, Shawler, Avery L., Signer, Johannes, Silovský, Václav, Silva, João Paulo, Simon, Richard, Smiley, Rachel A., Smith, Douglas W., Solberg, Erling J., Ellis-Soto, Diego, Spiegel, Orr, Stabach, Jared, Stacy-Dawes, Jenna, Stahler, Daniel R., Stephenson, John, Stewart, Cheyenne, Strand, Olav, Sunde, Peter, Svoboda, Nathan J., Swart, Jonathan, Thompson, Jeffrey J., Toal, Katrina L., Uiseb, Kenneth, VanAcker, Meredith C., Velilla, Marianela, Verzuh, Tana L., Wachter, Bettina, Wagler, Brittany L., Whittington, Jesse, Wikelski, Martin, Wilmers, Christopher C., Wittemyer, George, Young, Julie K., Zięba, Filip, Zwijacz-Kozica, Tomasz, Huijbregts, Mark A. J., Mueller, Thomas

المصدر: Tucker , M A , Schipper , A M , Adams , T S F , Attias , N , Avgar , T , Babic , N L , Barker , K J , Bastille-Rousseau , G , Behr , D M , Belant , J L , Beyer , D E , Blaum , N , Blount , J D , Bockmühl , D , Pires Boulhosa , R L , Brown , M B , Buuveibaatar , B , Cagnacci , F , Calabrese , J M , Černe , R , Chamaillé-Jammes , S , Chan ....

الوصف: COVID-19 lockdowns in early 2020 reduced human mobility, providing an opportunity to disentangle its effects on animals from those of landscape modifications. Using GPS data, we compared movements and road avoidance of 2300 terrestrial mammals (43 species) during the lockdowns to the same period in 2019. Individual responses were variable with no change in average movements or road avoidance behavior, likely due to variable lockdown conditions. However, under strict lockdowns 10-day 95th percentile displacements increased by 73%, suggesting increased landscape permeability. Animals’ 1-hour 95th percentile displacements declined by 12% and animals were 36% closer to roads in areas of high human footprint, indicating reduced avoidance during lockdowns. Overall, lockdowns rapidly altered some spatial behaviors, highlighting variable but substantial impacts of human mobility on wildlife worldwide.

وصف الملف: application/pdf

العلاقة: https://research-portal.st-andrews.ac.uk/en/researchoutput/behavioral-responses-of-terrestrial-mammals-to-covid19-lockdownsTest(12c4f981-030d-4325-bea2-cffc76ea40e4).html

الإتاحة: https://doi.org/10.1126/science.abo6499Test
https://research-portal.st-andrews.ac.uk/en/researchoutput/behavioral-responses-of-terrestrial-mammals-to-covid19-lockdownsTest(12c4f981-030d-4325-bea2-cffc76ea40e4).html
https://research-repository.st-andrews.ac.uk/bitstream/10023/27835/1/Tucker_2023_Science_Behavioral_responses_mammals_lockdown_AAM.pdfTest

المؤلفون: Cullen, Joshua A., Attias, Nina, Desbiez, Arnaud L.J., Valle, Denis

المساهمون: Houston Zoo, Naples Zoo, Fresno Chaffee Zoo, Disney Conservation Grant, Chester Zoo, Jacksonville Zoo and Gardens, Conservation Grants Fund, RZSS, La passerelle Conservation, Beauval Nature, Parc Animalier D’Auvergne, Riverbanks Zoo & Garden, Sacramento Zoo, Augsburg Zoo, Abilene Zoo, Association Française des Parcs Zoologiques, Association Francophone des Vétérinaires de Parc Zoologique, Bergen County Zoological Park, Idea Wild, CERZA Safaris en Normandie, Nature Research, Wilhelma Zoologisch-Botanischer Garten Stuttgart, Taiwan Forestry Bureau, The Mohamed bin Zayed Species Conservation Fund, Play for Nature, Atlanta Zoo, The Whitley Fund for Nature

المصدر: PeerJ ; volume 11, page e14726 ; ISSN 2167-8359

الوصف: Advances in biologging have increased the understanding of how animals interact with their environment, especially for cryptic species. For example, giant armadillos ( Priodontes maximus ) are the largest extant species of armadillo but are rarely encountered due to their fossorial and nocturnal behavior. Through the analysis of speed, turning angles, and accelerometer activity counts, we estimated behavioral states, characterized activity budgets, and investigated the state-habitat associations exhibited by individuals monitored with GPS telemetry in the Brazilian Pantanal from 2019 to 2020. This methodology is proposed as a useful framework for the identification of priority habitat. Using the non-parametric Bayesian mixture model for movement (M3), we estimated four latent behavioral states that were named ‘vigilance-excavation’, ‘local search’, ‘exploratory’, and ‘transit’. These states appeared to correspond with behavior near burrows or termite mounds, foraging, ranging, and rapid movements, respectively. The first and last hours of activity presented relatively high proportions of the vigilance-excavation state, while most of the activity period was dominated by local search and exploratory states. The vigilance-excavation state occurred more frequently in regions between forest and closed savannas, whereas local search was more likely in high proportions of closed savanna. Exploratory behavior probability increased in areas with high proportions of both forest and closed savanna. Our results establish a baseline for behavioral complexity, activity budgets, and habitat associations in a relatively pristine environment that can be used for future work to investigate anthropogenic impacts on giant armadillo behavior and fitness. The integration of accelerometer and GPS-derived movement data through our mixture model has the potential to become a powerful methodological approach for the conservation of other cryptic species.

الإتاحة: https://doi.org/10.7717/peerj.14726Test
https://peerj.com/articles/14726.pdfTest
https://peerj.com/articles/14726.xmlTest
https://peerj.com/articles/14726.htmlTest

المؤلفون: Feijó, Anderson, Magalhães, Rodolfo, Bocchiglieri, Adriana, Cordeiro, José Luís P., Sena, Liana Mara, Attias, Nina

المساهمون: Coordenação de Aperfeiçoamento de Pessoal de Nível Superior

المصدر: Cambridge Prisms: Extinction ; volume 1 ; ISSN 2755-0958

الوصف: Conservation of poorly known species is challenging as lack of knowledge on their specific requirements may hamper effective strategies. Here, by integrating biogeographical and landscape analyses, we show that informed actions can be delineated for species with limited presence-only data available. We combine species distribution and connectivity models with temporal land cover changes to define priority areas for conservation of the endemic Brazilian three-banded armadillo, one of the most threatened xenarthrans that was once considered extinct in the wild. We revealed that areas of savanna and grassland are the most suitable habitats for the species and that uplands in the Caatinga ecoregion have a greater likelihood for dispersal. The few remnant armadillo populations are spatially associated with core areas of natural vegetation remnants. Worrisomely, 76% of natural core areas were lost in the past 30 years, mirroring the species’ severe population decline. Preserving the remnant core natural areas should be a high priority to ensure the species’ survival. We highlight key areas for proactive and reactive conservation actions for the three-banded armadillo that will benefit other threatened sympatric species. Our integrative framework provides a set of valuable information for guided conservation management that can be replicated for other poorly known species.

الإتاحة: https://doi.org/10.1017/ext.2022.2Test
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S275509582200002XTest

المؤلفون: Rafiq, Kasim, Jordan, Neil R., McNutt, J. Weldon, Neelo, John, Attias, Nina, Boersma, Dee, Palmer, Meredith S., Ruesink, Jennifer, Abrahms, Briana

المصدر: Science ; volume 384, issue 6698, page 855-856 ; ISSN 0036-8075 1095-9203

الإتاحة: https://doi.org/10.1126/science.ado6937Test

المؤلفون: Valle, Denis, Attias, Nina, Cullen, Joshua A., Hooten, Mevin B., Giroux, Aline, Oliveira-Santos, Luiz Gustavo R., Desbiez, Arnaud L. J., Fletcher Jr., Robert J.

المصدر: Movement Ecology; 3/1/2024, Vol. 12 Issue 1, p1-17, 17p

مصطلحات موضوعية: HABITAT selection, ANIMAL dispersal, FRAGMENTED landscapes, DATA analysis, CORRIDORS (Ecology), MARKOV processes

مصطلحات جغرافية: BRAZIL

مستخلص: Background: Understanding how to connect habitat remnants to facilitate the movement of species is a critical task in an increasingly fragmented world impacted by human activities. The identification of dispersal routes and corridors through connectivity analysis requires measures of landscape resistance but there has been no consensus on how to calculate resistance from habitat characteristics, potentially leading to very different connectivity outcomes. Methods: We propose a new model, called the Time-Explicit Habitat Selection (TEHS) model, that can be directly used for connectivity analysis. The TEHS model decomposes the movement process in a principled approach into a time and a selection component, providing complementary information regarding space use by separately assessing the drivers of time to traverse the landscape and the drivers of habitat selection. These models are illustrated using GPS-tracking data from giant anteaters (Myrmecophaga tridactyla) in the Pantanal wetlands of Brazil. Results: The time model revealed that the fastest movements tended to occur between 8 p.m. and 5 a.m., suggesting a crepuscular/nocturnal behavior. Giant anteaters moved faster over wetlands while moving much slower over forests and savannas, in comparison to grasslands. We also found that wetlands were consistently avoided whereas forest and savannas tended to be selected. Importantly, this model revealed that selection for forest increased with temperature, suggesting that forests may act as important thermal shelters when temperatures are high. Finally, using the spatial absorbing Markov chain framework, we show that the TEHS model results can be used to simulate movement and connectivity within a fragmented landscape, revealing that giant anteaters will often not use the shortest-distance path to the destination patch due to avoidance of certain habitats. Conclusions: The proposed approach can be used to characterize how landscape features are perceived by individuals through the decomposition of movement patterns into a time and a habitat selection component. Additionally, this framework can help bridge the gap between movement-based models and connectivity analysis, enabling the generation of time-explicit connectivity results. [ABSTRACT FROM AUTHOR]

: Copyright of Movement Ecology is the property of BioMed Central and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)