التفاصيل البيبلوغرافية
| العنوان: |
Mechanisms behind bottom-up effects : eutrophication increases fecundity by shortening the interspawning interval in stickleback |
| المؤلفون: |
Saarinen, Anne, Candolin, Ulrika |
| المساهمون: |
Organismal and Evolutionary Biology Research Programme, Helsinki Institute of Sustainability Science (HELSUS), Biosciences, Behavioural Ecology - Candolin Research Lab |
| بيانات النشر: |
PeerJ Inc. |
| سنة النشر: |
2020 |
| المجموعة: |
Helsingfors Universitet: HELDA – Helsingin yliopiston digitaalinen arkisto |
| مصطلحات موضوعية: |
CLADOPHORA-GLOMERATA, DIVERSITY, ECOSYSTEMS, Egg production, Environmental change, FISH, FRESH-WATER, Foraging, GASTEROSTEUS-ACULEATUS, LONG-TERM CHANGES, NUTRIENT ENRICHMENT, Population dynamics, REPRODUCTIVE-PERFORMANCE, Reproduction, TROPHIC STATE, Trophic interactions, Ecology, evolutionary biology, Environmental sciences |
| الوصف: |
Anthropogenic eutrophication is altering aquatic environments by promoting primary production. This influences the population dynamics of consumers through bottom-up effects, but the underlying mechanisms and pathways are not always clear. To evaluate and mitigate effects of eutrophication on ecological communities, more research is needed on the underlying factors. Here we show that anthropogenic eutrophication increases population fecundity in the threespine stickleback (Gasterosteus aculeatus) by increasing the number of times females reproduce-lifetime fecundity-rather than instantaneous fecundity. When we exposed females to nutrient-enriched waters with enhanced algal growth, their interspawning interval shortened but the size of their egg clutches, or the size of their eggs, did not change. The shortening of the interspawning interval was probably caused by higher food intake, as algae growth promotes the growth of preferred prey populations. Enhanced female lifetime fecundity could increase offspring production and, hence, influence population dynamics. In support of this, earlier studies show that more offspring are emerging in habitats with denser algae growth. Thus, our results stress the importance of considering lifetime fecundity, in addition to instantaneous fecundity, when investigating the impact of human-induced eutrophication on population processes. At a broader level, our results highlight the importance of following individuals over longer time spans when evaluating the pathways and processes through which environmental changes influence individual fitness and population processes. ; Peer reviewed |
| نوع الوثيقة: |
article in journal/newspaper |
| وصف الملف: |
application/pdf |
| اللغة: |
English |
| العلاقة: |
Saarinen , A & Candolin , U 2020 , ' Mechanisms behind bottom-up effects : eutrophication increases fecundity by shortening the interspawning interval in stickleback ' , PeerJ , vol. 8 , 9521 . https://doi.org/10.7717/peerj.9521Test; ORCID: /0000-0001-8736-7793/work/101029802; http://hdl.handle.net/10138/318243Test; 9deb4911-0c27-41cd-a58a-4701cd1d7f74; 000549756100007 |
| الإتاحة: |
http://hdl.handle.net/10138/318243Test |
| حقوق: |
cc_by ; info:eu-repo/semantics/openAccess ; openAccess |
| رقم الانضمام: |
edsbas.EA499E8C |
| قاعدة البيانات: |
BASE |
