Works (11)

Updated: July 5th, 2023 16:00

2008 journal article

A novel field evaluation of the effectiveness of distance and independent observer sampling to estimate aural avian detection probabilities

Journal of Applied Ecology, 45(5), 1349–1356.

author keywords: avian point counts; aural detections; detection probability; distance sampling; field tests; multiple observers
TL;DR: A field validation of distance and double-observer methods of estimating detection probabilities on aural avian point counts and encourages ecologists working with sampling methods to develop similar methods of working with simulated populations through use of technology. (via Semantic Scholar)
UN Sustainable Development Goal Categories
13. Climate Action (Web of Science)
14. Life Below Water (Web of Science)
15. Life on Land (Web of Science; OpenAlex)
Sources: Web Of Science, Crossref, NC State University Libraries
Added: August 6, 2018

2007 journal article

A field evaluation of distance measurement error in auditory avian point count surveys

JOURNAL OF WILDLIFE MANAGEMENT, 71(8), 2759–2766.

author keywords: abundance; auditory detections; bird surveys; distance estimation; measurement error; point count surveys
TL;DR: Findings, which are based on realistic field conditions, suggest measures of uncertainty in distance estimates to auditory detections are substantially higher than assumed by most researchers, which means aural point count estimates of avian abundance based on distance methods deserve careful scrutiny because they are likely biased. (via Semantic Scholar)
UN Sustainable Development Goal Categories
13. Climate Action (Web of Science)
14. Life Below Water (Web of Science)
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2007 journal article

Experimental analysis of the auditory detection process on avian point counts

AUK, 124(3), 986–999.

By: T. Simons n, M. Alldredge n, K. Pollock n & J. Wettroth*

author keywords: ambient noise; detection probability; measurement error; point counts
TL;DR: Some of the inherent difficulties in interpreting avian abundance estimates based on auditory detections are illustrated, and why estimates that do not account for variations in detection probability will not withstand critical scrutiny are illustrated. (via Semantic Scholar)
UN Sustainable Development Goal Categories
13. Climate Action (Web of Science)
14. Life Below Water (Web of Science)
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2007 journal article

Factors affecting aural detections of songbirds

ECOLOGICAL APPLICATIONS, 17(3), 948–955.

author keywords: auditory detection; detection probability; observer differences; point counts; singing rate; species difference; warblers
MeSH headings : Animals; Auditory Perception; Humans; Observer Variation; Population Density; Reproducibility of Results; Songbirds / physiology; Vocalization, Animal
TL;DR: The findings of this study strongly support the importance of adjusting measures of avian diversity or abundance from auditory point counts with direct estimates of detection probability. (via Semantic Scholar)
UN Sustainable Development Goal Categories
13. Climate Action (Web of Science)
14. Life Below Water (Web of Science)
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2007 journal article

Local annual survival and seasonal residency rates of semipalmated sandpipers (Calidris pusilla) in Puerto Rico

AUK, 124(4), 1397–1406.

By: S. Rice*, J. Collazo n, M. Alldredge n, B. Harrington* & A. Lewis*

author keywords: apparent survival; Calidris pusilla; Caribbean; mark-recapture; migration; Semipalmated Sandpiper; stopover; winter distribution
TL;DR: Seasonal residency and local annual survival rates of migratory Semipalmated Sandpipers at the Cabo Rojo salt flats, Puerto Rico, support the inclusion of the Caribbean as part of the species' winter range and suggest that birds replenish some spent fat reserves and strive for energetic maintenance. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2007 journal article

Multiple-species analysis of point count data: a more parsimonious modelling framework

JOURNAL OF APPLIED ECOLOGY, 44(2), 281–290.

author keywords: abundance; capture-recapture; multiple-species modelling; point count surveys; population surveys
TL;DR: A multiple-species modelling framework that uses similarities in capture/detection processes among species to model multiple species data more parsimoniously is developed and is applicable to a wide range of sampling techniques and taxa. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

2006 journal article

Estimating detection probabilities from multiple-observer point counts

AUK, 123(4), 1172–1182.

author keywords: bird surveys; capture-recapture; detection probability; multiple observer; point counts
TL;DR: Although independent-observer methods are expensive and impractical for large- scale applications, it is believed they can provide important insights into the sources and degree of perception bias in avian point-count estimates and may be useful in a two-stage sampling framework to calibrate larger surveys based on single-ob server estimates. (via Semantic Scholar)
UN Sustainable Development Goal Categories
13. Climate Action (Web of Science)
14. Life Below Water (Web of Science)
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2004 journal article

Aerial surveys and the potential biological removal technique indicate that the Torres Strait dugong fishery is unsustainable

ANIMAL CONSERVATION, 7, 435–443.

By: H. Marsh*, I. Lawler*, D. Kwan*, S. Delean*, K. Pollock n & M. Alldredge n

TL;DR: Estimates of a sustainable harvest are so far below the current harvest that it must be unsustainable and governments should heed the Islanders' requests for assistance in implementing co‐management of the fishery as a matter of urgency. (via Semantic Scholar)
UN Sustainable Development Goal Categories
14. Life Below Water (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2002 journal article

Nutritional quality of forages used by elk in northern Idaho

JOURNAL OF RANGE MANAGEMENT, 55(3), 253–259.

By: M. Alldredge n, J. Peek n & W. Wall n

author keywords: elk; Cervus elaphus; forage quality; nutrition; Idaho
UN Sustainable Development Goal Categories
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2001 journal article

Alterations of shrub communities in relation to herbivory in northern Idaho

Northwest Science, 75(2), 137–144.

By: M. Alldredge, J. Peek & W. Wall

Source: NC State University Libraries
Added: August 6, 2018

2001 journal article

Shrub community development and annual productivity trends over a 100-year period on an industrial forest of Northern Idaho

FOREST ECOLOGY AND MANAGEMENT, 152(1-3), 259–273.

By: M. Alldredge*, J. Peek* & W. Wall

author keywords: shrub development; plantation; natural regeneration; shrub productivity; species diversity
UN Sustainable Development Goal Categories
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

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