Results 41 to 50 of about 6,071 (169)

Nest success of ground‐nesting ducks in the wetlands of Great Salt Lake, Utah

open access: yesEcology and Evolution, 2023
The number of ground‐nesting ducks in the wetlands of Great Salt Lake, Utah has drastically decreased in the past few decades. A potential cause for this decline is the increase of predator species and their abundances, which has caused most nests to ...
Mark E. Bell, Michael R. Conover
doaj   +1 more source

The use of artificial floating nest platforms as conservation measure for the common tern Sterna hirundo: a case study in the RAMSAR site Druzno Lake in Northern Poland

open access: yesThe European Zoological Journal, 2022
Artificial nesting sites with floating platforms may effectively support local breeding populations of waterbirds (enhancing productivity and survival) when natural sites are unavailable.
B. Manikowska–Ślepowrońska   +2 more
doaj   +1 more source

Seasonal variation in reproductive measures of tropical Roseate Terns Sterna dougallii: previously undescribed breeding patterns in a seabird [PDF]

open access: yes, 2001
Seasonal variation in egg-laying, egg size, hatching success, hatchling mass, fledging success and chick growth of Roseate Terns Sterna dougallii breeding on Aride Island (Seychelles), Indian Ocean, were studied in 1997 and 1998.
Ramos, Jaime
core   +1 more source

Brown Trout Abundance in Boreal Streams With Large Wood

open access: yesEcology of Freshwater Fish, Volume 35, Issue 2, April 2026.
ABSTRACT Large wood has been found to be a crucial component in riverine ecosystems. However, due to the heavy channelization of rivers and intensive forestry practices over the past few decades, the amount of large wood in these ecosystems has decreased worldwide. River restoration aims to mitigate the effects of channelization and restore the channel
Alisa Koski   +3 more
wiley   +1 more source

High individual repeatability of the migratory behaviour of a long-distance migratory seabird

open access: yesMovement Ecology, 2022
Background Understanding the evolution of migration requires knowledge of the patterns, sources, and consequences of variation in migratory behaviour, a need exacerbated by the fact that many migratory species show rapid population declines and require ...
Nathalie Kürten   +6 more
doaj   +1 more source

Age‐related changes of oxidative status and immune function in a long‐lived seabird

open access: yesJournal of Avian Biology, Volume 2026, Issue 2, March 2026.
Experimental studies in humans and laboratory species have shown that the decline of the immune system with age (immunosenescence) and the accumulation of oxidative damage to macromolecules are two key contributors to the onset and progression of the ageing process. Although laboratory models have provided important insights, the physiological basis of
Beatrice Berardi   +6 more
wiley   +1 more source

Evidence of continued exposure to legacy persistent organic pollutants in threatened migratory common terns nesting in the Great Lakes

open access: yesEnvironment International, 2020
Persistent organic pollutants (POPs) accumulate in the food web of the Great Lakes ecosystem, causing concern that these chemicals play a role in the decline of avian species such as colonial-nesting waterbirds.
Steven C. Travis   +2 more
doaj   +1 more source

Waterbird community changes in the Wilderness Lakes, South Africa (Part 3 of 3): Diving piscivores and scavengers

open access: yesKoedoe: African Protected Area Conservation and Science, 2023
Estuarine waterbodies typically support diverse and abundant waterbird communities. However, global environmental degradation as a result of anthropogenic activities is leading to species level changes in biodiversity, with top predators such as ...
Ian A. Russell
doaj   +1 more source

When, how and why do Common Terns Sterna hirundo perform their first own brood? - Factors moving the recruitment process [PDF]

open access: yes, 2012
Kurzfassung der Dissertation an der Carl von Ossietzky-Universität Oldenburg, Fakultät für Mathematik und Naturwissenschaften (2009), betreut durch Prof. Dr.
Ludwigs, Jan-Dieter
core  

Mallard response to experimental human disturbance on sanctuary areas is mediated by hunting

open access: yesWildlife Biology, Volume 2026, Issue 2, March 2026.
Wildlife managers often provide spatial sanctuaries for wildlife to escape both lethal (e.g. hunting) and non‐lethal (e.g. non‐consumptive recreation) human disturbance. However, as societal interest in outdoor recreation continues to climb, many areas face added pressure to allow recreation, yet studies increasingly demonstrate negative effects of ...
Abigail G. Blake‐Bradshaw   +6 more
wiley   +1 more source

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