The Effects of Water Depth and Emergent Vegetation on Foraging Success and Habitat Selection of Wading Birds in the Everglades

Waterbirds ◽  
2011 ◽  
Vol 34 (4) ◽  
pp. 439-447 ◽  
Author(s):  
Samantha M. Lantz ◽  
Dale E. Gawlik ◽  
Mark I. Cook
Keyword(s):  
Habitat Selection ◽  
Water Depth ◽  
Emergent Vegetation ◽  
Foraging Success ◽  
Wading Birds ◽  
Selection Of

scholarly journals A Test of Cues Affecting Habitat Selection by Wading Birds

The Auk ◽  
2007 ◽  
Vol 124 (3) ◽  
pp. 1075-1082 ◽  
Author(s):  
Dale E. Gawlik ◽  
Gaea E. Crozier
Keyword(s):  
Habitat Selection ◽  
Shallow Water ◽  
Water Level ◽  
Water Depth ◽  
Water Levels ◽  
Environmental Cues ◽  
Wading Birds ◽  
Foraging Habitat ◽  
Fluctuating Water Level ◽  
Selection Of

Abstract We examined foraging-habitat selection by free-ranging wading birds presented with different social and environmental cues by conducting two experiments in eight replicate ponds adjacent to the northern border of the Florida Everglades. The first experiment examined the relative influence of a social (presence of a flock of decoys) and environmental (water depth) cue on the selection of ponds. The second experiment examined the influence of two environmental cues (water depth and fluctuating water level) on the selection of ponds. In the first experiment, wading birds were most attracted to ponds with both the presence of a flock of decoys and shallow water. The social and environmental cues both had the same attractive potential to wading birds. In the second experiment, birds were again attracted to ponds with shallow water; however, fluctuating water level had no significant influence on foraging-habitat selection. If birds do not perceive fluctuating water levels as a cue to habitat quality, then the well-documented relationship between nesting success and fluctuating water levels likely stems from birds responding to factors that covary with water-level changes. Una Prueba de las Señales que Afectan la Selección de Hábitat por Aves Vadeadoras

Foraging Success and Habitat Selection of the Eurasian Spoonbill (Platalea leucorodia) at Poyang Lake, China

Waterbirds ◽  
2016 ◽  
Vol 39 (4) ◽  
pp. 356-364 ◽  
Author(s):  
Benjamin Knight Sullender ◽  
Jeb Barzen ◽  
Janet Silbernagel
Keyword(s):  
Habitat Selection ◽  
Poyang Lake ◽  
Foraging Success ◽  
Selection Of

Habitat selection by muskrats in experimental marshes undergoing succession

1994 ◽  
Vol 72 (4) ◽  
pp. 675-680 ◽  
Author(s):  
William R. Clark
Keyword(s):  
Habitat Selection ◽  
Water Depth ◽  
Plant Succession ◽  
Habitat Types ◽  
Wetland Succession ◽  
Wetland Complex ◽  
Density Dependent Habitat Selection ◽  
Different Levels ◽  
Selection Of

I analyzed habitat selection by muskrats (Ondatra zibethicus) in relation to density and plant succession in an experimental wetland complex flooded to three different levels: normal (long-term average elevation), medium (30 cm above normal), and high (60 cm above normal) at Delta, Manitoba. Locations where muskrats were trapped or built lodges were superimposed on vegetation types and water depth, in a geographic information system, to determine habitat selection. More than 60% of all individuals were captured in stands of Scirpus, Scolochloa, or Typha, and muskrats significantly avoided areas with water < 1 cm that were dominated by annuals and Hordeum. Muskrats preferred Typha and Scirpus stands for lodges, although some lodges were built in Scolochloa and Phragmites. Water depth at lodges averaged 38 cm, and > 90% of lodges were located in water ≥ 10 cm. Tall dense emergent growth trapped the most snow, resulting in the ice being less thick. Muskrats first captured in Typha or Scirpus stands gained significantly more mass during winter than did those captured in all other habitat types. As emergent vegetation changed and muskrat population density increased, the selection of habitat such as Typha in moderately deep water changed less than did the selection of habitat in shallow water or of those dominated by Scolochloa or sparse Scirpus. These data confirm density-dependent habitat selection by muskrats and suggest that spatial complexity induced by wetland succession is important in muskrat population dynamics.

Seasonal habitat selection of an expanding sika deer Cervus nippon population in eastern Hokkaido, Japan

2003 ◽  
Vol 9 (1) ◽  
pp. 141-153 ◽  
Author(s):  
Mayumi Sakuragi ◽  
Hiromasa Igota ◽  
Hiroyuki Uno ◽  
Koichi Kaji ◽  
Masami Kaneko ◽  
...  
Keyword(s):  
Habitat Selection ◽  
Sika Deer ◽  
Cervus Nippon ◽  
Selection Of

Factors of Habitat Selection of Acheulean Sites at Ramat Yiron, Israel

Paléorient ◽  
1981 ◽  
Vol 7 (1) ◽  
pp. 23-31 ◽  
Author(s):  
Amiel Brosh ◽  
M. Ohel
Keyword(s):  
Habitat Selection ◽  
Selection Of

scholarly journals The Winter Habitat Selection of Red Deer (Cervus elaphus) Based on a Multi-Scale Model

Animals ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 2454
Author(s):  
Yue Sun ◽  
Yanze Yu ◽  
Jinhao Guo ◽  
Minghai Zhang
Keyword(s):  
Habitat Selection ◽  
Environmental Factors ◽  
Cervus Elaphus ◽  
Red Deer ◽  
Scale Model ◽  
Winter Habitat ◽  
Multi Scale ◽  
Optimal Scale ◽  
Scale Models ◽  
Selection Of

Single-scale frameworks are often used to analyze the habitat selections of species. Research on habitat selection can be significantly improved using multi-scale models that enable greater in-depth analyses of the scale dependence between species and specific environmental factors. In this study, the winter habitat selection of red deer in the Gogostaihanwula Nature Reserve, Inner Mongolia, was studied using a multi-scale model. Each selected covariate was included in multi-scale models at their “characteristic scale”, and we used an all subsets approach and model selection framework to assess habitat selection. The results showed that: (1) Univariate logistic regression analysis showed that the response scale of red deer to environmental factors was different among different covariate. The optimal scale of the single covariate was 800–3200 m, slope (SLP), altitude (ELE), and ratio of deciduous broad-leaved forests were 800 m in large scale, except that the farmland ratio was 200 m in fine scale. The optimal scale of road density and grassland ratio is both 1600 m, and the optimal scale of net forest production capacity is 3200 m; (2) distance to forest edges, distance to cement roads, distance to villages, altitude, distance to all road, and slope of the region were the most important factors affecting winter habitat selection. The outcomes of this study indicate that future studies on the effectiveness of habitat selections will benefit from multi-scale models. In addition to increasing interpretive and predictive capabilities, multi-scale habitat selection models enhance our understanding of how species respond to their environments and contribute to the formulation of effective conservation and management strategies for ungulata.

Habitat selection of Cape porcupines in a farmland-suburban context in KwaZulu-Natal, South Africa

2019 ◽  
Vol 98 ◽  
pp. 111-118
Author(s):  
Samukelisiwe P. Ngcobo ◽  
Amy-Leigh Wilson ◽  
Colleen T. Downs
Keyword(s):  
South Africa ◽  
Habitat Selection ◽  
Kwazulu Natal ◽  
Selection Of

scholarly journals Mass occurrence and habitat selection of Common Redpolls (Carduelis flammea) after a large seed crop year: snow-covered ground facilitates food access

2021 ◽  
Author(s):  
Svein Dale
Keyword(s):  
Climate Change ◽  
Habitat Selection ◽  
Snow Cover ◽  
Breeding Season ◽  
Boreal Forests ◽  
Large Seed ◽  
Mass Occurrence ◽  
Seed Crops ◽  
Ecosystem Changes ◽  
Selection Of

AbstractIn boreal forests, food supplies typically have cyclic variations, and many species here fluctuate in numbers from year to year. One group of species showing large variations in population size is birds specialized on seeds from masting trees. Here, I analyze spatial patterns of a mass occurrence and habitat selection of the Common Redpoll (Carduelis flammea) during the breeding season in southeastern Norway in 2020 after a year with large seed crops from Norway Spruce (Picea abies) and Downy Birch (Betula pubescens). I found that Common Redpoll numbers increased with elevation and towards the northwest. Numbers were also strongly and positively correlated with snow depth in early April when snow was present mainly above 400 m elevation. Sites with snow cover in early April (30% of all sites) held 96.4% of all individuals recorded. Field observations indicated that Common Redpolls foraged extensively for spruce seeds on the snow until the end of May when young were independent. I suggest that the mass occurrence was due to a unique combination of exceptionally large seed crops of two tree species coinciding in the same year. The masting produced large amounts of food both for overwintering (birch seeds) and for breeding (spruce seeds), and during the breeding season snow cover facilitated access to food resources. Dependency of Common Redpolls on snow cover suggests that climate change may negatively impact some seed-eaters in boreal regions. On the other hand, higher temperatures may induce more frequent masting which may be beneficial for seed-eaters. Thus, climate change is likely to lead to complex ecosystem changes in areas where snow cover may disappear.

scholarly journals Oviposition Habitat Selection of Dengue Vectors, Aedes aegypti and Aedes albopictus in Response to Fish Predator

2016 ◽  
Vol 27 (3) ◽  
pp. 117-122 ◽  
Author(s):  
Wan Fatma Zuharah ◽  
◽  
Nik Fadzly ◽  
Wilson Kang Wei Ong ◽  
Zarul Hazrin Hashim ◽  
...  
Keyword(s):  
Habitat Selection ◽  
Aedes Aegypti ◽  
Aedes Albopictus ◽  
Fish Predator ◽  
Dengue Vectors ◽  
Selection Of
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