Results 11 to 20 of about 6,989 (171)

Reproduction in Black-Crowned Night-Herons Fed Selenium [PDF]

open access: yesLake and Reservoir Management, 1988
ABSTRACT Agricultural and industrial practices can produce wastewater that contains high concentrations of selenium, a naturally-occurring trace element. Selenium entering aquatic systems through wastewater inflow can accumulate in aquatic food chains to levels that may be toxic to fish and wildlife species.
Gregory J. Smith   +4 more
openaire   +1 more source

Changes in heron and egret populations on the Laurentian Great Lakes and connecting channels, 1977-2009

open access: yesAvian Conservation and Ecology, 2015
Canadian and U.S. federal wildlife agencies completed four decadal surveys, spanning the years 1977 to 2009, to census colonial waterbirds breeding on the Great Lakes and adjoining bodies of water.
Scott A. Rush   +5 more
doaj   +1 more source

Dual visible‐thermal camera approach facilitates drone surveys of colonial marshbirds

open access: yesRemote Sensing in Ecology and Conservation, 2021
Waterbirds are important indicators of wetland health, and understanding their status and trends is necessary for appropriate management and conservation.
Ann E. McKellar   +2 more
doaj   +1 more source

Mosquito host selection varies seasonally with host availability and mosquito density. [PDF]

open access: yesPLoS Neglected Tropical Diseases, 2011
Host selection by vector mosquitoes is a critical component of virus proliferation, particularly for viruses such as West Nile (WNV) that are transmitted enzootically to a variety of avian hosts, and tangentially to dead-end hosts such as humans.
Tara C Thiemann   +3 more
doaj   +1 more source

Spatial drivers of wetland bird occupancy within an urbanized matrix in the Upper Midwestern United States

open access: yesEcosphere, 2022
Wetland birds are undergoing severe population declines in North America, with habitat degradation and wetland loss considered two of the primary causes.
Anastasia A. Rahlin   +2 more
doaj   +1 more source

High recombination rates and hotspots in a Plasmodium falciparum genetic cross [PDF]

open access: yes, 2010
Using the universal P2/P8 primers, we were able to obtain the gene segments of chromo-helicase-DNA binding protein (CHD)-Z and CHD-W from ten species of ardeid birds including Chinese egret (Egretta eulophotes), little egret (E.
Jiang, Hongying   +16 more
core   +1 more source

Nest success and nest site selection of wetland birds in a restored wetland system

open access: yesAvian Conservation and Ecology, 2021
Although most emergent wetlands across central North America have been destroyed or degraded, wetland restoration in recent decades has provided new habitat resources for wetland birds in agriculturally dominated landscapes.
Auriel M. V. Fournier   +16 more
doaj  

Reproductive success of Common Ravens influences nest predation rates of their prey: implications for egg-oiling techniques

open access: yesAvian Conservation and Ecology, 2018
Abundance and distribution of Common Ravens (Corvus corax) have increased across western North America in recent decades, leading to conservation concern for sensitive prey species.
Brianne E. Brussee, Peter S. Coates
doaj   +1 more source

Diet of Black-crowned Night-herons (Nycticorax nycticorax) in a wetland of the Paraná River´s alluvial valley [PDF]

open access: yes, 2013
We analysed the feeding ecology of Nycticorax nycticorax based on fourty individuals captured on the Carabajal İsland (Santa Fe, 31º39?S, 60º42?W), determining the minimum sample, index of relative importance (IRI), size of prey, feeding efficiency ...
Beltzer, Adolfo Hector   +3 more
core   +1 more source

Monitoring of water bird population with an account of heronry at Surajpur lake, an urban wetland in National Capital Region, India

open access: yesIndian Journal of Animal Sciences, 2018
Surajpur wetland is a prominent wetland site in National Capital Region, India, known for its rich biodiversity of flora and fauna. The present study was conducted to record the water bird diversity with an account of heronry from March 2010 to February
NASIM AHMAD ANSARI
doaj   +1 more source

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