Zobrazeno 1 - 10
of 44
pro vyhledávání: '"John A. Kadlec"'
Publikováno v:
Biological Conservation. 94:173-181
Translocations are a common conservation technique; however, the feasibility and success of translocations are evaluated rarely. We translocated 57 trumpeter swans ( Cygnus buccinator) from Idaho to Utah during 1996 to encourage migration to more sou
Publikováno v:
The American Midland Naturalist. 142:181-190
Research on ducklings and goslings has demonstrated that young birds hatched in moderate to high saline environments without access to fresh drinking water grow and develop slower, and have increased mortality rates. Most direct saline-induced mortal
Autor:
Robert R. Cox, John A. Kadlec
Publikováno v:
Wetlands. 15:1-8
Changes in biomass of potential waterfowl foods were investigated in Great Salt Lake marshes during July and August of 1988–89. In freshwater habitats, biomass of midge (Chironomidae) larvae and pupae and water boatman (Corixidae) nymphs declined f
Autor:
John A. Kadlec
Publikováno v:
Wetlands. 13:1-9
Water budgets for 10 small diked marshes in Manitoba, Canada were constructed for each of the 6 ice-free months for 5 years. Water levels in the marshes were maintained at 3 levels by pumping: 4 marshes at the average level of the surrounding marsh,
Autor:
John A. Kadlec, Joel D. Huener
Publikováno v:
Wetlands. 12:72-78
We examined the response of aquatic macroin vertebrates to three marsh management strategies. The three management practices compared were conventional full pool management, full pool management with carp(Cyprinus carpio) control, and controur furrow
Publikováno v:
Canadian Journal of Fisheries and Aquatic Sciences. 48:2355-2364
This study examined the response by nektonic invertebrates to prolonged flooding of a series of experimental marshes in the Delta Marsh in south-central Manitoba. Prior to flooding, nektonic invertebrate densities, biomass, and numbers of taxa were a
Publikováno v:
Aquatic Botany. 37:299-314
Samples of living (2.8% N, 0.3% P) and naturally senesced (0.6% N, 0.05% P) leaves of cattail (Typha glauca Godr.) were collected from a shallowly flooded stand during July 1979 and February 1980, respectively. Decomposition patterns of the two litte
Publikováno v:
Wetlands. 10:47-60
An experiment was conducted in the Delta Marsh in south-central Manitoba to assess the effects of initial litter quality, duration of litter submergence, and season of submergence on invertebrate abundance and biomass. Samples of two types of hybrid
Publikováno v:
The Journal of Wildlife Management. 63:990
Relatively high levels of saline drinking water may adversely affect the growth, development, and survival of young waterfowl. Saline drinking water was suspect in the low survival rate of Canada goose (Branta canadensis) goslings at Fish Springs Nat
Autor:
Gary L. Krapu, Bruce D. J. Batt, Michael G. Anderson, John A. Kadlec, John T. Ratti, C. Davison Ankney, Alan D. Afton, Douglas H. Johnson
Publikováno v:
The Journal of Wildlife Management. 58:189