Are mist-nets suitable for rapid habitat evaluations in the tropics? Results from a study in Guinea-Bissau

Catry, Paulo; Araújo, António; Cruz, Carlos Alberto Gonçalves; Pinheiro, Ana Martins; Poças, Miguel; Nadum, Justo; Armelin, Michael; Pereira, Jorge

doi:10.1080/00306525.1999.9634528

Cited by 6 publications

(2 citation statements)

References 18 publications

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“…This is because the overall drop in captures reported in temperate zones and in other tropical regions is not substantially different from what we observed [22], [41], [57]. However, researchers should take into consideration that net avoidance varies substantially among species and with environmental factors, and may even be negligible, as in the case of species on migration [22].…”

Section: Discussioncontrasting

confidence: 53%

Optimizing Sampling Design to Deal with Mist-Net Avoidance in Amazonian Birds and Bats

et al. 2013

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Mist netting is a widely used technique to sample bird and bat assemblages. However, captures often decline with time because animals learn and avoid the locations of nets. This avoidance or net shyness can substantially decrease sampling efficiency. We quantified the day-to-day decline in captures of Amazonian birds and bats with mist nets set at the same location for four consecutive days. We also evaluated how net avoidance influences the efficiency of surveys under different logistic scenarios using re-sampling techniques. Net avoidance caused substantial declines in bird and bat captures, although more accentuated in the latter. Most of the decline occurred between the first and second days of netting: 28% in birds and 47% in bats. Captures of commoner species were more affected. The numbers of species detected also declined. Moving nets daily to minimize the avoidance effect increased captures by 30% in birds and 70% in bats. However, moving the location of nets may cause a reduction in netting time and captures. When moving the nets caused the loss of one netting day it was no longer advantageous to move the nets frequently. In bird surveys that could even decrease the number of individuals captured and species detected. Net avoidance can greatly affect sampling efficiency but adjustments in survey design can minimize this. Whenever nets can be moved without losing netting time and the objective is to capture many individuals, they should be moved daily. If the main objective is to survey species present then nets should still be moved for bats, but not for birds. However, if relocating nets causes a significant loss of netting time, moving them to reduce effects of shyness will not improve sampling efficiency in either group. Overall, our findings can improve the design of mist netting sampling strategies in other tropical areas.

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Section: Discussioncontrasting

confidence: 53%

Optimizing Sampling Design to Deal with Mist-Net Avoidance in Amazonian Birds and Bats

et al. 2013

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“…Mist netting is useful for identifying species, such as understory specialists, that point counts may miss because they are difficult to see and seldom vocalize (Terborgh et al , 1990). Mist netting alone, however, sometimes provides misleading estimates of relative species composition and abundance (Remsen & Good, 1996; Catry et al , 1999). Our two data sets should complement each other (Dawson et al , 1995) as each highlights particular aspects of the avian community and its change over time.…”

Section: Methodsmentioning

confidence: 99%

Effects of an ENSO‐related fire on birds of a lowland tropical forest in Sumatra

Adeney

Ginsberg

Russell

et al. 2006

Animal Conservation

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Comparisons of bird community composition in burned and unburned areas of a lowland tropical rainforest in Sumatra, Indonesia indicated the following during the first 5 years after burning: (1) original burn severity strongly affected bird community composition at both the genus and family levels; (2) bird community composition continued to change progressively away from immediate post-burn composition in medium and severely burned forest as well as adjacent unburned forest; and (3) the degree of impact was both taxon and guild specific, with understory insectivores most detrimentally affected. Although species richness may temporarily increase in burned areas, this study suggests that multiple wildfires will lead to a decline in diversity over a large scale as birds of open fields replace interior forest specialists.

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Composition of avian assemblage in a protected forested area in Haiti: Evidence for recent decline of both forest-dependent and insectivore species

Exantus

Cézilly

2023

Global Ecology and Conservation

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Are mist-nets suitable for rapid habitat evaluations in the tropics? Results from a study in Guinea-Bissau

Cited by 6 publications

References 18 publications

Optimizing Sampling Design to Deal with Mist-Net Avoidance in Amazonian Birds and Bats

Optimizing Sampling Design to Deal with Mist-Net Avoidance in Amazonian Birds and Bats

Effects of an ENSO‐related fire on birds of a lowland tropical forest in Sumatra

Composition of avian assemblage in a protected forested area in Haiti: Evidence for recent decline of both forest-dependent and insectivore species

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