Changes in habitat availability for outmigrating juvenile salmon (Oncorhynchusspp.) following estuary restoration

2016 ◽  
Vol 24 (3) ◽  
pp. 415-427 ◽  
Author(s):  
Christopher S. Ellings ◽  
Melanie J. Davis ◽  
Eric E. Grossman ◽  
Isa Woo ◽  
Sayre Hodgson ◽  
...  
Keyword(s):  
Juvenile Salmon ◽  
Habitat Availability ◽  
Estuary Restoration

scholarly journals Testing the Likeable, Therefore Abundant Hypothesis: Bird Species Likeability by Urban Residents Varies Significantly with Species Traits

Land ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 487
Author(s):  
Lillian Collins ◽  
Grant D. Paton ◽  
Sara A. Gagné
Keyword(s):  
Undergraduate Students ◽  
Species Conservation ◽  
Bird Species ◽  
Bird Community ◽  
Species Traits ◽  
Community Change ◽  
Habitat Availability ◽  
Urban Residents ◽  
Behavioral Traits

The urbanization of landscapes filters bird communities to favor particular species traits, driven in part by the changes that homeowners make to the amount and quality of habitat in yards. We suggest that an ultimate driver of these proximate mechanisms underlying bird community change with respect to urbanization is the likeability of species traits by urban residents. We hypothesize that bird species likeability, modulated by species traits, influences the degree to which homeowners alter the availability and quality of habitat on their properties and thereby affects species population sizes in urbanized landscapes. We refer to this new hypothesis as the Likeable, therefore Abundant Hypothesis. The Likeable, therefore Abundant Hypothesis predicts that (1) bird species likeability varies with species morphological and behavioral traits, (2) homeowners use trait-based likeability as a motivator to modify habitat availability and quality on their properties, and (3) residential habitat availability and quality influences species populations at landscape scales. We tested the first prediction of the Likeable, therefore Abundant Hypothesis using a survey of 298 undergraduate students at the University of North Carolina at Charlotte who were asked to rank their preferences for 85 forest generalist and edge/open country songbird species grouped according to 10 morphological and behavioral traits. Survey respondents preferred very small, primarily blue or black species that are insectivorous, aerial or bark foragers, residents, and culturally unimportant. On the other hand, respondents disliked large or very large, primarily yellow or orange species that forage on the ground and/or forage by flycatching, are migratory, and are culturally important. If the Likeable, therefore Abundant Hypothesis is true, natural resource managers and planners could capitalize on the high likeability of species that are nevertheless negatively affected by urbanization to convince homeowners and residents to actively manage their properties for species conservation.

Effects of habitat availability on dispersion of a stream cyprinid

1993 ◽  
Vol 37 (2) ◽  
pp. 121-130 ◽  
Author(s):  
Mary C. Freeman ◽  
Gary D. Grossman
Keyword(s):  
Habitat Availability

A Climate-Mediated Shift in the Estuarine Habitat Mosaic Limits Prey Availability and Reduces Nursery Quality for Juvenile Salmon

2021 ◽  
Author(s):  
Melanie J. Davis ◽  
Isa Woo ◽  
Christopher S. Ellings ◽  
Sayre Hodgson ◽  
David A. Beauchamp ◽  
...  
Keyword(s):  
Prey Availability ◽  
Juvenile Salmon ◽  
Estuarine Habitat ◽  
Habitat Mosaic ◽  
Nursery Quality

Mass balance controls on sediment scour and bedrock erosion in waterfall plunge pools

Geology ◽  
2021 ◽  
Author(s):  
Joel S. Scheingross ◽  
Michael P. Lamb
Keyword(s):  
Sediment Transport ◽  
Mass Balance ◽  
River Discharge ◽  
Sediment Load ◽  
Sediment Flux ◽  
Habitat Availability ◽  
Flux Divergence ◽  
Plunge Pool ◽  
Bedrock Erosion ◽  
Recurrence Intervals

Waterfall plunge pools experience cycles of sediment aggradation and scour that modulate bedrock erosion, habitat availability, and hazard potential. We calculate sediment flux divergence to evaluate the conditions under which pools deposit and scour sediment by comparing the sediment transport capacities of waterfall plunge pools (Qsc_pool) and their adjacent river reaches (Qsc_river). Results show that pools fill with sediment at low river discharge because the waterfall jet is not strong enough to transport the supplied sediment load out of the pool. As discharge increases, the waterfall jet strengthens, allowing pools to transport sediment at greater rates than in adjacent river reaches. This causes sediment scour from pools and bar building at the downstream pool boundary. While pools may be partially emptied of sediment at modest discharge, floods with recurrence intervals >10 yr are typically required for pools to scour to bedrock. These results allow new constraints on paleodischarge estimates made from sediment deposited in plunge pool bars and suggest that bedrock erosion at waterfalls with plunge pools occurs during larger floods than in river reaches lacking waterfalls.

The impact of changing habitat availability on population trends of woodland birds associated with early successional plantation woodland

Bird Study ◽  
2015 ◽  
Vol 62 (1) ◽  
pp. 39-55 ◽  
Author(s):  
Malcolm D. Burgess ◽  
Paul E. Bellamy ◽  
Simon Gillings ◽  
David G. Noble ◽  
Philip V. Grice ◽  
...  
Keyword(s):  
Population Trends ◽  
Habitat Availability ◽  
Woodland Birds ◽  
The Impact

Reconstructing habitat use by juvenile salmon sharks links upwelling to strandings in the California Current

2015 ◽  
Vol 525 ◽  
pp. 217-228 ◽  
Author(s):  
AB Carlisle ◽  
SY Litvin ◽  
EL Hazen ◽  
DJ Madigan ◽  
KJ Goldman ◽  
...  
Keyword(s):  
Habitat Use ◽  
California Current ◽  
Juvenile Salmon
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