Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Matthew J. Ashton"'
Autor:
Kelly O. Maloney, Matthew J. Ashton, Richard H. Walker, Matthew J. Cashman, Rosemary M. Fanelli, Gregory B. Noe, Kevin P. Krause
Publikováno v:
The Science of the total environment. 789
Stream ecosystems are complex networks of interacting terrestrial and aquatic drivers. To untangle these ecological networks, efforts evaluating the direct and indirect effects of landscape, climate, and instream predictors on biological condition th
Publikováno v:
Northeastern Naturalist. 21:N35-N40
In March 2012 and April—May 2013, we collected three dead specimens of Elliptio complanata (Eastern Elliptio) in the tidal, freshwater portion of the Patapsco River, providing the first evidence of this species from the river. Although these specim
Autor:
Matthew J. Ashton, Scott A. Stranko, Jay V. Kilian, Robert H. Hilderbrand, Sara L. Weglein, David C. Kazyak
Publikováno v:
Transactions of the American Fisheries Society. 143:700-708
The American Eel Anguilla rostrata has been excluded from many streams along the Atlantic slope of the USA because of movement barriers such as large dams. Loss of this formerly common top predator has the potential to influence many aspects of headw
Publikováno v:
Environmental Monitoring and Assessment. 186:1167-1182
In an ongoing effort to propose biologically protective nutrient criteria, we examined how total nitrogen (TN) and its forms were associated with macroinvertebrate communities in wadeable streams of Maryland. Taxonomic and functional metrics of an in
Publikováno v:
Proceedings of the Biological Society of Washington. 124:280-309
On a local scale, the biota of the Plummers Island, Maryland, vicinity is among the most intensively studied in the world. The fishes occurring in Potomac River and its tributaries in the vicinity of that island have been subjected to periodic scruti
Autor:
Susan E. Gresens, Patrick J. Ciccotto, Jay V. Kilian, Andrew J. Becker, Matthew J. Ashton, Scott A. Stranko, Ronald J. Klauda
Publikováno v:
Northeastern Naturalist. 17:593-614
The distribution of imperiled stream fish, crayfish, salamander, and freshwater mussel species of Maryland streams in relation to urban land cover and nonnative species was investigated. Over the last 30 years, extinction or extirpation of 13 stream
Publikováno v:
Freshwater Mollusk Biology and Conservation. 20:114
Despite the increasing use of passive integrated transponder (PIT) tags in freshwater mussel research and conservation, there has been no evaluation of the trade-offs in cost and effort between commonly used adhesive types. These factors could be imp
Autor:
Patrick J. Ciccotto, Matthew J. Ashton
Publikováno v:
Northeastern Naturalist. 17:671-672
We report the discovery of the non-native loach Misgurnus anguillicaudatus (Oriental Weatherfish) from two streams in Maryland in the vicinity of the Baltimore metropolitan area. Although only two individuals have been observed since 2007, a ban on t
Autor:
Thomas J. Near, Matthew J. Ashton
Publikováno v:
Environmental Biology of Fishes. 88:37-38
Keywords Percina.Logperch.ChesapeakeCommon name: Chesapeake logperch. Conservationstatus: “Threatened” in Maryland (MD), U.S.A.applied to Percina caprodes until the state recognizesrevived specific epithet due to recent removal fromsynonymy with
Autor:
Matthew J. Ashton
Publikováno v:
Freshwater Mollusk Biology and Conservation. 15:1
Gaps in our knowledge of freshwater mussel life history, distribution, and ecology remain even though their study has increased considerably over the past few decades. These studies have traditionally taken place within a population, river, or larger