Zobrazeno 1 - 10
of 76
pro vyhledávání: '"Robert A. Krebs"'
Autor:
Robert A. Krebs, Karen L. Bean
Publikováno v:
Psyche: A Journal of Entomology, Vol 98, Iss 1, Pp 101-109 (1991)
Externí odkaz:
https://doaj.org/article/62f3652fa2bd4a0f945a398a969d7457
Publikováno v:
PLOS Water. 2:e0000103
Water quality in the Cuyahoga River, a national heritage river of the United States, has improved greatly since the infamous river fire of 1969, but much of the watershed faces combined demands of a state scenic river valued for nature and the primar
Publikováno v:
Hydrobiologia. 848:1897-1909
Dreissenid mussels can alter nutrient cycling and algal productivity in many freshwater ecosystems. But their effects on sedimentary phosphorus dynamics remain largely undefined. Here, we report evidence that dreissenids affect the concentrations of
Publikováno v:
Ecological Restoration. 38:24-31
Autor:
Robert A. Krebs, Jonathan M. Bossenbroek, David T. Zanatta, Lyubov E. Burlakova, Todd C. Crail, Alexander Y. Karatayev
Publikováno v:
Freshwater Science. 37:330-342
Finding remnant populations of species that are of conservation concern can be difficult, particularly in aquatic habitats. Models of ecological niches can aid in the discovery of refuges. ...
Publikováno v:
American Malacological Bulletin. 36:31-41
Where a stream enters a large lake, the mouth represents a transitional environment that is neither truly lotic nor lentic in nature and therefore is likely to affect the fauna present. Theory on habitat area and stream size predicts that species ric
Autor:
Matthew T. Begley, Robert A. Krebs
Publikováno v:
Northeastern Naturalist. 24:1-14
Freshwater mussels continue to experience declines in population numbers in response to changing environments. Identifying aspects of the environment associated with the presence and abundance of mussels in small streams is challenging where past rec
Publikováno v:
Journal of Great Lakes Research. 41:1123-1130
Physical barriers, habitat fragmentation, invasive species and geographic distance have isolated remnant populations of unionids in Great Lakes coastal refuges. Dreissenid species (Dreissena polymorpha and Dreissena rostriformis bugensis) may be the
Autor:
Robert A. Krebs, David J. Kriska
Publikováno v:
Natural Areas Journal. 39:442
In the absence of a disturbance regime, flora at historical oak sand barrens change as leaf litter builds up and increasing canopy cover shades bare soils. Over time, black oak sand barrens become more mesic, and other trees including Acer rubrum, Fr