Hydrobiologia
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Foraging behavior of redheads (Aythya americana) wintering in Texas and Louisiana
Hydrobiologia - - 2006
Life cycle of Calanus chilensis Brodsky in Bay of San Jorge, Antofagasta, Chile
Hydrobiologia - Tập 292 - Trang 289-294 - 1994
The copepod Calanus chilensis is an endemic component of the zooplankton community in northern Chile. Size distributions of adult females, relative frequency of copepodid stages and relative numbers of adult males and nauplii, suggest the presence of at least 6 generations during the year, although the species seems to continuously reproduce through all seasons. Temperature profiles from 0 to 175 ......
Pink eggs and snails: field oviposition patterns of an invasive snail, Pomacea insularum, indicate a preference for an invasive macrophyte
Hydrobiologia - Tập 646 - Trang 243-251 - 2010
Oviposition of non-calcareous or thinly shelled eggs represents an important life stage of many insects, amphibians, and several gastropods. A recently identified invasive species of apple snail, Pomacea insularum, exhibits alarming invasive characteristics of high reproductive rates and generalist consumption patterns. This snail takes the opposite approach to egg laying compared to most aquatic ......
A new annelidicolous copepod, Cyclorhiza megalova n. sp., with comments on its functional biology and possible phylogenetic relationships
Hydrobiologia - Tập 167 - Trang 533-538 - 1988
A new copepod belonging to the little-known family Phyllodicolidae has been found in Galway Bay, western Ireland, infesting the phyllodocid polychaet Eteone longa. It is a strongly transformed species showing marked extra-ecdysial growth and possessing some interesting adaptive features. A description is presented, along with some notes on its functional biology and an assessment of its possible p......
Use of an extensive radio receiver network to document Pacific lamprey (Lampetra tridentata) entrance efficiency at fishways in the Lower Columbia River, USA
Hydrobiologia - Tập 483 - Trang 45-53 - 2002
We used an extensive network of more than 170 radio receiving stations to document fine-scale passage efficiency of adult anadromous Pacific lamprey at Bonneville and The Dalles Dams in the lower Columbia River in the northwestern U.S.A. Each spring from 1997 to 2000, we released 197–299 lamprey with surgically implanted radio transmitters. Unique transmitter codes and the date and time of recepti......
An experimental assessment of the temperature responses of two sympatric seagrasses, Amphibolis antarctica and Amphibolis griffithii, in relation to their biogeography
Hydrobiologia - Tập 302 - Trang 63-70 - 1995
Walker, D. I. and Cambridge, M. L. 1994. An experimental assessment of the temperature responses of two sympatric seagrasses, Amphibolis antarctica and Amphibolis griffithii, in relation to their biogeography. Seedlings of the viviparous seagrasses, Amphibolis antarctica (Labill.) Sonder & Aschers. and Amphibolis griffithii (Black) den Hartog, were grown in seawater cultures at temperatures of 10–......
Paleolimnology of Neusiedlersee, Austria
Hydrobiologia - Tập 214 - Trang 229-238 - 1991
Neusiedlersee is a shallow, alkaline lake (Table 1), which came into existance by tectonic subsidence about 12000–14000 yr ago. At present, half of it is covered by Phragmites australis which developed after the lake fell dry for the last time in 1868. Due to its astatic character, with about 100–200 dry periods since the lake came into existence, most of the sediment of the open lake overlying a ......
The effect of taxonomic resolution on the assessment of ecological water quality classes
Hydrobiologia - Tập 516 - Trang 269-283 - 2004
Within the ecological assessment of running waters based on benthic macroinvertebrates different levels of taxonomic resolution (species, genus, family and higher) are in use. Although assessment systems are often developed with detailed data on species level, water managers and other end-users could like to use data on higher taxonomic levels to assess the ecological quality of a water body becau......
Organic carbon in British lowland ponds: estimating sediment stocks, possible practical benefits and significant unknowns
Hydrobiologia - Tập 850 - Trang 3225-3239 - 2022
Ponds are aquatic habitats defined by their small size. Although small they are found on every continent, they are disproportionately rich in aquatic biodiversity, benefit terrestrial wildlife and have important ecosystem function benefits. One of these benefits might be carbon sequestration, a possibility suggested by (1) their abundance, (2) the intensity of their biogeochemical activity. Whilst......
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