scholarly journals Empirical tests of habitat selection theory reveal that conspecific density and patch quality, but not habitat amount, drive long‐distance immigration in a wild bird

2021 ◽  
Author(s):  
Clark S. Rushing ◽  
T. Brandt Ryder ◽  
Jonathon J. Valente ◽  
T. Scott Sillett ◽  
Peter P. Marra
Keyword(s):  
Habitat Selection ◽  
Wild Bird ◽  
Patch Quality ◽  
Long Distance ◽  
Habitat Amount ◽  
Selection Theory ◽  
Conspecific Density ◽  
Empirical Tests

Empirical Tests on Regressive Estimations: Implications on Surveys and Diaries

2004 ◽  
Vol 94 (3) ◽  
pp. 1061-1074 ◽  
Author(s):  
Rex S. Toh ◽  
Eunkyu Lee ◽  
Michael Y. Hu
Keyword(s):  
Real Life ◽  
Average Frequency ◽  
Actual Behavior ◽  
Long Distance ◽  
Estimation Errors ◽  
The Mean ◽  
Telephone Calls ◽  
Empirical Tests ◽  
Survey Responses ◽  
Behavioral Frequencies

Using a large real-life corporate database initially consisting of 3,990 heads of households stratified on the basis of various demographic and geographic variables, and whose communication activities (long distance telephone calls, letters, cards, and visits) were surveyed and monitored, this study investigated the direction as well as magnitude of estimation errors in survey responses and diary entries. Supporting the 1994 Fiedler and Armbruster psychometric formulation and conjecture, we show that estimation errors in reports of the frequency and duration of people's own communication activities exhibit a consistent tendency to regress toward the mean. This regressive estimation is greater for those who are further away from the mean in actual behavior and is proportional to the actual deviation from the mean. Furthermore, this regressive estimation is inversely related to the average frequency across behavioral categories. An important implication of our findings is that the distribution of estimated behavioral frequencies and durations appear more concentrated in surveys than they actually are in the general population, although the general shape of the distribution is unaffected.

scholarly journals USE OF TIME TEMPERATURE MONITORS FOR PREDICTING SHELF LIFE OF FRESH FRUITS AND VEGETABLES

HortScience ◽  
1990 ◽  
Vol 25 (9) ◽  
pp. 1132F-1132
Author(s):  
Bill B. Dean ◽  
Eugene M. Kupferman
Keyword(s):  
Shelf Life ◽  
Fruits And Vegetables ◽  
Storage Conditions ◽  
Export Market ◽  
Long Distance ◽  
Use Of Time ◽  
Color Development ◽  
Yellow Color ◽  
Empirical Tests ◽  
Storage Temperatures

Shelf life of perishable commodities is a function of time by temperature effects on the composite kinetic reactions within each commodity. Empirical tests to approximate shelf life have limited value, particularly in long-distance shipment when less than ideal storage conditions occur, such as for the export market. Time temperature monitors (TTMs) have been developed for monitoring storage temperatures and predicting remaining shelf life. Kinetics curves for ripening of pears, yellow color development in broccoli and browning of mushrooms were compared to kinetics properties of available TTMs at 5, 10, and 20°C. Each commodity deteriorated or ripened at rates corresponding to a different TTM. At 20°C, broccoli kinetics were similar to TTM MC 60 or 67, pears to MC 74, and mushrooms MC 66. Customized TTMs and application of this technology will be discussed.

Fragmentation effects on woodlark habitat selection depend on habitat amount and spatial scale

2020 ◽  
Author(s):  
L. Bosco ◽  
S. A. Cushman ◽  
H. Y. Wan ◽  
K. A. Zeller ◽  
R. Arlettaz ◽  
...  
Keyword(s):  
Habitat Selection ◽  
Spatial Scale ◽  
Habitat Amount

scholarly journals Context-dependent colonization of terrestrial habitat ‘islands’ by a long-distance migrant bird

2018 ◽  
Vol 285 (1885) ◽  
pp. 20181490
Author(s):  
Robin C. Whytock ◽  
Elisa Fuentes-Montemayor ◽  
Kevin Watts ◽  
Nicholas A. Macgregor ◽  
Lefora Williams ◽  
...  
Keyword(s):  
Large Scale ◽  
Spatial Scales ◽  
Landscape Context ◽  
Aquatic Environments ◽  
Patch Quality ◽  
Long Distance ◽  
Habitat Patches ◽  
Terrestrial Environments ◽  
Context Dependent ◽  
Migrant Bird

Landscape context can affect how individuals perceive patch quality during colonization. However, although context-dependent colonization has been observed in aquatic environments, it has rarely been studied in terrestrial environments or at large spatial scales. In this paper, we assessed how landscape context influenced colonization rates in a large-scale ( ca 7000 km 2 ) terrestrial system where colonizers (Willow Warbler Phylloscopus trochilus ) are capable of rapid, long-distance movements. Bioacoustic recorders were used to detect first song dates (an indicator of colonization or re-colonization) and settlement in 23 naturally replicated habitat patches. We compared support for three competing hypotheses describing colonization patterns that depend on landscape context (‘redirection’, ‘landscape-selection’ and ‘relative patch size’) with two patch-level hypotheses (patch ‘quality’ and ‘heterospecific attraction’). First song was earlier when habitat availability in the landscape was low, supporting the ‘redirection’ hypothesis. Settlement probability was best predicted by patch ‘quality’ and was lower in woodlands with a dense understorey. Results suggest that colonization of habitat patches by male P. trochilus after spring migration is spatially hierarchical. First, initial colonization depends on landscape context, and settlement is then determined by fine-scale vegetation characteristics. More broadly, we suggest that patterns observed in fragmented aquatic environments (e.g. ‘redirection’) can, in some circumstances, be extended to large-scale terrestrial environments.

Effects of seasonality, isolation and patch quality for habitat selection processes by mute swans Cygnus olor in a fishpond landscape

Oikos ◽  
2010 ◽  
Vol 120 (6) ◽  
pp. 801-812 ◽  
Author(s):  
Guillaume Gayet ◽  
Matthieu Guillemain ◽  
Maurice Benmergui ◽  
François Mesleard ◽  
Thierry Boulinier ◽  
...  
Keyword(s):  
Habitat Selection ◽  
Patch Quality ◽  
Cygnus Olor ◽  
Selection Processes ◽  
Mute Swans

scholarly journals A time-lagged effect of conspecific density on habitat selection by snowshoe hare

PLoS ONE ◽  
2018 ◽  
Vol 13 (1) ◽  
pp. e0190643 ◽  
Author(s):  
Toshinori Kawaguchi ◽  
André Desrochers
Keyword(s):  
Habitat Selection ◽  
Snowshoe Hare ◽  
Conspecific Density ◽  
Time Lagged ◽  
Lagged Effect

Ecopsychology and Evolutionary Psychology: Implications and Limitations of Habitat Selection Theory

Ecopsychology ◽  
2015 ◽  
Vol 7 (2) ◽  
pp. 96-103 ◽  
Author(s):  
Tristan Leslie Snell ◽  
Janette Graetz Simmonds ◽  
Anthony Phillip Greenway
Keyword(s):  
Habitat Selection ◽  
Evolutionary Psychology ◽  
Selection Theory

scholarly journals Resampling Method for Applying Density-Dependent Habitat Selection Theory to Wildlife Surveys

PLoS ONE ◽  
2015 ◽  
Vol 10 (6) ◽  
pp. e0128238 ◽  
Author(s):  
Olivia Tardy ◽  
Ariane Massé ◽  
Fanie Pelletier ◽  
Daniel Fortin
Keyword(s):  
Habitat Selection ◽  
Density Dependent ◽  
Selection Theory ◽  
Resampling Method ◽  
Density Dependent Habitat Selection
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