المؤلفون: Vander Laan, Jacob J., Hawkins, Charles P., Olson, John R., Hill, Ryan A.

المصدر: Freshwater Science, 2013 Sep . 32(3), 801-820.

الوصول الحر: https://www.jstor.org/stable/10.1899/12-186.1Test

المؤلفون: Fergus, C. Emi, Brooks, J. Renée, Kaufmann, Philip R., Herlihy, Alan T., Hill, Ryan A., Mitchell, Richard M., Ringold, Paul

المصدر: Ecosphere; Nov2023, Vol. 14 Issue 11, p1-24, 24p

مصطلحات موضوعية: RIPARIAN plants, STREAMFLOW, LAND cover, STRUCTURAL equation modeling, WATER chemistry, ECOLOGICAL assessment, EPHEMERAL streams

مصطلحات جغرافية: UNITED States

المؤلفون: Hawkins, Charles P., Olson, John R., Hill, Ryan A.

المصدر: Journal of the North American Benthological Society, 2010 Mar . 29(1), 312-343.

الوصول الحر: https://www.jstor.org/stable/10.1899/09-092.1Test

المؤلفون: Chen, Kai, Olson, John R., Vander Laan, Jacob J., Hill, Ryan A., Wang, Beixin, Hawkins, Charles P.

المصدر: Hydrobiologia; Jul2019, Vol. 837 Issue 1, p177-194, 18p, 1 Illustration, 4 Charts, 3 Graphs

مصطلحات موضوعية: ECOLOGICAL assessment, WATERSHEDS

مصطلحات جغرافية: CHINA

المؤلفون: Riato, Luisa¹ (AUTHOR) riato.luisa@epa.gov, Hill, Ryan A.² (AUTHOR), Herlihy, Alan T.³ (AUTHOR), Peck, David V.² (AUTHOR), Kaufmann, Philip R.^2,3 (AUTHOR), Stoddard, John L.² (AUTHOR), Paulsen, Steven G.² (AUTHOR)

المصدر: Ecological Indicators. Aug2022, Vol. 141, pN.PAG-N.PAG. 1p.

مصطلحات موضوعية: *NAVICULA, *DIATOMS, *BIOINDICATORS, *ENVIRONMENTAL protection, *ECOLOGICAL assessment, *ENVIRONMENTAL agencies, *BIOLOGICAL classification, *SAMPLING (Process)

مصطلحات جغرافية: UNITED States

الشركة/الكيان: UNITED States. Environmental Protection Agency

المؤلفون: HILL, RYAN¹ (AUTHOR), SENDASHONGA, CYRIE¹ (AUTHOR)

المصدر: Conservation Biology. Dec2006, Vol. 20 Issue 6, p1620-1625. 6p. 1 Illustration.

مصطلحات موضوعية: *TRANSGENIC organisms, *TRANSGENIC plants, *BIODIVERSITY, *ECOLOGICAL assessment, *RISK assessment, *CONSERVATION biology

مصطلحات جغرافية: CARTAGENA (Spain)