Habitat Selection and Habitat Use by the Bog Turtle (Clemmys muhlenbergii) in Maryland

2001 ◽  
Vol 35 (4) ◽  
pp. 545 ◽  
Author(s):  
Jessica L. Morrow ◽  
James H. Howard ◽  
Scott A. Smith ◽  
Deborah K. Poppel
Keyword(s):  
Habitat Selection ◽  
Habitat Use ◽  
Bog Turtle ◽  
Clemmys Muhlenbergii

scholarly journals Assessing year‐round habitat use by migratory sea ducks in a multi‐species context reveals seasonal variation in habitat selection and partitioning

Ecography ◽  
2020 ◽  
Vol 43 (12) ◽  
pp. 1842-1858
Author(s):  
Juliet S. Lamb ◽  
Peter W. C. Paton ◽  
Jason E. Osenkowski ◽  
Shannon S. Badzinski ◽  
Alicia M. Berlin ◽  
...  
Keyword(s):  
Seasonal Variation ◽  
Habitat Selection ◽  
Habitat Use ◽  
Sea Ducks

Seasonal variation in coastal marine habitat use by the European shag: Insights from fine scale habitat selection modeling and diet

2017 ◽  
Vol 141 ◽  
pp. 224-236 ◽  
Author(s):  
Candice Michelot ◽  
David Pinaud ◽  
Matthieu Fortin ◽  
Philippe Maes ◽  
Benjamin Callard ◽  
...  
Keyword(s):  
Seasonal Variation ◽  
Habitat Selection ◽  
Habitat Use ◽  
Fine Scale ◽  
Marine Habitat ◽  
Coastal Marine

Nocturnal habitat use of Atlantic salmon parr in winter

1999 ◽  
Vol 56 (9) ◽  
pp. 1543-1550 ◽  
Author(s):  
Kevin G Whalen ◽  
Donna L Parrish
Keyword(s):  
Habitat Selection ◽  
Atlantic Salmon ◽  
Habitat Use ◽  
Dead Zone ◽  
Habitat Availability ◽  
High Flows ◽  
Young Of The Year ◽  
Salmon Parr ◽  
Random Measurements ◽  
Atlantic Salmon Parr

We completed 22 night snorkeling surveys between November and March 1995-1997 to quantify Atlantic salmon (Salmo salar) parr habitat use relative to habitat availability in the Rock River, Vermont, U.S.A. On average, post-young-of-the-year (PYOY) parr selected greater water depths in winter than young-of-the-year (YOY) parr, whereas YOY and PYOY parr both selected water velocities ([Formula: see text]19 cm/s) that were significantly lower than random measurements (46 cm/s). Maturity of PYOY parr had no significant influence on habitat selection. The majority of YOY and PYOY parr at night were found in contact with the stream bottom resting on silt-sand or gravel substrates in velocity dead-zone habitats created by the stream edge or depositional habitats created by midstream rocks and boulders. The strong selection that nocturnal Atlantic salmon parr exhibit for low water velocity areas in winter indicates the importance of maintaining large instream cover that provides refuges from high flows. The similarity that YOY and PYOY parr exhibited in many elements of habitat selection suggests that both stages may be similarly susceptible to habitat limitations in winter.

Habitat selection by the Puerto Rican yellow-chinned anole, Anolis gundlachi

2005 ◽  
Vol 83 (7) ◽  
pp. 983-988 ◽  
Author(s):  
Javier A Rodríguez-Robles ◽  
Manuel Leal ◽  
Jonathan B Losos
Keyword(s):  
Habitat Selection ◽  
Habitat Use ◽  
Puerto Rican ◽  
Visual Cues ◽  
Evolutionary Dynamics ◽  
Males And Females ◽  
Selection For ◽  
Free Ranging ◽  
Woody Substrates ◽  
Selection Of

Habitat selection can directly affect the fitness of an individual and the evolutionary dynamics of the population to which that organism belongs. We studied habitat use of the Puerto Rican yellow-chinned anole (Anolis gundlachi Peters, 1876) to examine whether this arboreal lizard uses its environment in a nonrandom manner. Males and females preferred woody vegetation substrates over nonwoody plants and sierra palms (Prestoea acuminata var. montana (Graham) A. Henderson and G. Galeano) as perching sites, and they also selected wider vegetation than what was randomly available. Selection for minimizing conspicuousness to potential predators and for increased locomotion capacity may help explain the preference for woody substrates and broader surfaces, respectively. Anolis gundlachi relies almost exclusively on visual cues for foraging and social interactions, and using wider perches also increases an individual's ability to scan a larger proportion of its territory. Our findings thus indicate that the nonrandom habitat use of free-ranging A. gundlachi leads to the selection of perching substrates that may increase performance of ecologically relevant capabilities.

Foraging-habitat selection by bats at an urban–rural interface: comparison between a successful and a less successful species

2004 ◽  
Vol 82 (7) ◽  
pp. 1157-1164 ◽  
Author(s):  
Joseph E Duchamp ◽  
Dale W Sparks ◽  
John O Whitaker, Jr.
Keyword(s):  
Habitat Selection ◽  
Habitat Use ◽  
Compositional Analysis ◽  
Sympatric Species ◽  
Eptesicus Fuscus ◽  
Foraging Habitat ◽  
Tree Cavities ◽  
Urban Rural ◽  
Regional Population ◽  
Suburban Development

We compared habitat use of two sympatric species of bat in a rural area undergoing suburban development. The two species are similar in diet and foraging-habitat use but differ in current roosting habitat, and exhibit contrasting regional population trends. Evening bat, Nycticeius humeralis (Rafinesque, 1818), populations are declining in central Indiana, whereas big brown bat, Eptesicus fuscus (Beauvois, 1796), populations are increasing. We assessed habitat selection by 22 adult female bats using radiotelemetry and compositional analysis. Eptesicus fuscus used several roosts across the study area; all but one roosted in human-made structures. Nycticeius humeralis clustered roosts within a small group of woodlots; all roosted in tree cavities. Eptesicus fuscus foraged for longer periods of time and nonreproductive individuals of this species had larger foraging ranges than N. humeralis. Both species foraged primarily in agricultural and wooded areas. During foraging, N. humeralis showed greater foraging-site fidelity and a stronger selection for agricultural and wooded areas than E. fuscus. We suggest that N. humeralis in our study area is probably more sensitive to suburban development near their roosts than E. fuscus.

Habitat use of the introduced cane toad (Rhinella marina) and native frog species in tropical Australia

2015 ◽  
Vol 31 (6) ◽  
pp. 531-540 ◽  
Author(s):  
Martin Mayer ◽  
Gregory P. Brown ◽  
Barbara Zimmermann ◽  
Matthew J. Greenlees ◽  
Richard Shine
Keyword(s):  
Spatial Distribution ◽  
Habitat Selection ◽  
Habitat Use ◽  
Ecological Impacts ◽  
Northern Australia ◽  
Cane Toad ◽  
Rhinella Marina ◽  
Frog Species ◽  
Tropical Australia ◽  
Reducing Activity

Abstract:The ecological impacts of introduced species can reveal mechanisms underlying habitat selection and behaviour. We investigated the habitat use of native frog species and the invasive cane toads (Rhinella marina) in tropical northern Australia to measure overlap in habitat use, and to test if the presence of the cane toad influences frog behaviour. Native frog species and the cane toad both preferred habitats close to water and unvegetated holes. However, native frogs were found further from water (on average 19.4 m) than were toads (on average 12.6 m), and preferred areas with higher vegetation (8–50 cm) than did toads, which were more abundant in vegetation lower than 8 cm. For both types of anuran, the next neighbour was more often of the same type (89% in frogs, 52% in toads) than expected by chance (observed ratio: 75% frogs vs 25% toads), reflecting these differences in habitat use. Our counts of frog abundance increased on average 14.5% in areas from which we removed cane toads temporarily. This result suggests that cane toads inhibit the activity of native anurans either by inducing avoidance, or by reducing activity. By modifying the behaviour and spatial distribution of native taxa, invasive cane toads may curtail activities such as feeding and breeding.

Winter survival and habitat use of orphaned and non-orphaned moose calves in southern Quebec

1988 ◽  
Vol 66 (4) ◽  
pp. 919-924 ◽  
Author(s):  
Hélène Jolicoeur ◽  
Michel Crête
Keyword(s):  
Habitat Selection ◽  
Home Range ◽  
Habitat Use ◽  
Survival Rates ◽  
Winter Survival ◽  
Tree Cover ◽  
Home Ranges ◽  
Severe Winter ◽  
Browse Species ◽  
Forage Utilization

Survival, movements, home ranges, habitat selection, and diets of 13 orphaned and 13 non-orphaned moose calves were compared during their first winter. Survival of four other calves that became separated from their mothers was also monitored. The study took place during three winters between December 1978 and April 1983. Overall, winter survival rates between the two groups did not differ. When mortality did occur, it involved solitary (orphaned and separated) calves during a severe winter. Movements and home-range sizes of the two groups were also similar. Biomass of forage on winter sites, forage utilization, and importance of tree cover were similar on sites chosen by orphaned and non-orphaned calves. Minor differences were observed in the order of preference of browse species. Five solitary calves were involved in either temporary or permanent associations with other moose.

scholarly journals Habitat use by semi-domesticated reindeer, estimated with pellet-group counts

Rangifer ◽  
2009 ◽  
Vol 27 (2) ◽  
pp. 121 ◽  
Author(s):  
Anna Skarin
Keyword(s):  
Habitat Selection ◽  
Habitat Use ◽  
Rangifer Tarandus ◽  
Spatial Scales ◽  
Abiotic Factors ◽  
Resource Utilisation ◽  
High Quality ◽  
Human Disturbances ◽  
Pellet Group ◽  
Rangifer Tarandus Tarandus

Habitat selection theory predicts that herbivores should select for or against different factors at different spatial scales. For instance, quantity of forage is expected to be a strong factor influencing habitat choice at large scales, while forage quality may be important at finer scales. However, during summer, herbivores such as reindeer (Rangifer tarandus tarandus) can be limited in their grazing time by insect harassment, and do not always have the possibility to select for high quality forage. Human disturbances from hikers, etc., can also have a limiting effect on the possibility for reindeer to graze in high quality foraging habitats. Reindeer habitat selection at the landscape level was investigated through faecal pellet-group counts during the summers of 2002 and 2003 in two reindeer herding districts in Sweden. Resource utilization functions (RUFs) were developed using multiple linear regressions, where the pellet densities were related to vegetation types, topographic features, distances to tourist resorts, and distances to hiking trails. Validations of the models were performed through cross-validation correlations. Results show that high altitudes with high quality forage were important habitats. Areas that offer both snow patches and fresh forage plants for the reindeer were used in relation to their availability. The reindeer also seemed able to habituate to human intervention to a certain extent. The predictive capabilities of the RUF models were high and pellet-group counts seemed well suited to study how abiotic factors affect the habitat use at large temporal and spatial scales Abstract in Swedish / Sammanfattning: Renens användning av sommarbetesområdet, uppskattat med spillningsinventeringar Hierarkiskt habitatval innebär att djur väljer för och emot olika faktorer beroende på den rumsliga skalan. Mängden bete kan t ex spela stor roll för en växtätares habitatval på en stor skala medan kvalitén på betet kan ha större betydelse på en mindre skala. För renar (Rangifer tarandus tarandus), kan betestiden och möjligheten att hitta bra bete sommartid begränsas både på stor och liten skala pga. störningar från insekter och mänsklig aktivitet. Här studerades renarnas val av betesområde på landskapsnivå med hjälp av spillningsinventering under somrarna 2002 och 2003 i två samebyar i Sverige. Spillningstätheten för respektive område och år undersöktes statistiskt med hjälp av multipel linjär regression eller sk ”resource utilisation functions” (RUF). Där relaterades spillningstätheten till vegetationstyp, olika topografiska faktorer, avstånd till vandringsleder, stugplatser och fjällstationer. Resultaten visade att områden högt upp i terrängen med hög beteskvalitet var attraktiva. Vegetationstypen moderat snölega som anses ha hög beteskvalitet användes av renarna i relation till dess förekomst. Däremot verkade renarna undvika områden kring välbesökta fjällstugor och fjällstationer medan de däremot t o m föredrog områden nära vandringsleder. Det kan bero på att vandringslederna går genom attraktiva vegetationstyper. RUF-modellerna hade en hög prediktiv förmåga vilket visar att spillningsinventeringar är användbara när man önskar studera hur djuren använder ett betesområde i relation till olika faktorer på en relativt stor rumslig och temporal skala.

Habitat Characteristics, Population Size, and Home Range of the Bog Turtle, Clemmys muhlenbergii, in Maryland

1989 ◽  
Vol 23 (4) ◽  
pp. 356 ◽  
Author(s):  
Janis Davis Chase ◽  
Kenneth R. Dixon ◽  
J. Edward Gates ◽  
Dan Jacobs ◽  
Gary J. Taylor
Keyword(s):  
Home Range ◽  
Population Size ◽  
Habitat Characteristics ◽  
Bog Turtle ◽  
Clemmys Muhlenbergii
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