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20 results for “mist netting”
CBC02 Winter-spring survival and response of birds to variable climate using mist-net captures at Konza Prairie
This dataset includes captures of small-bodied landbirds captured via passive mist-netting efforts. The objectives are to (a) initiate a long-term survey of the non-breeding birds of the site, (b) understand the behavioral and physiological mechanisms that allow birds to cope with the unpredictable, variable, and often harsh conditions during winter months, and (c) provide a training platform for students. The collection of this dataset is fully integrated into the teaching of “Wild Bird Research” (an undergraduate hands-on research course in the Division of Biology) and less formal instruction in bird research methods for graduate students. Additionally, the banding efforts have benefited from the engagement of Konza Prairie docents and frequently hosts class visits and other visitors interested in witness bird banding operations.
Bird abundance-mist nets in the Luquillo Forest Dynamics Plot and Nora Devoe Cut Plots in the Luquillos Experimental Forest
This project seeks to measure long-term trends and variability in bird populations in tabonuco forest at El Verde. Repeated measures of bird populations using mist nets are conducted annually in the Luquillo Forest Dynamics Plot. For each bird caught, I obtain physical measurements (weight, length of wing, length of tail), and estimates of fat, age, and breeding condition. Captured birds are marked to estimate mortality and longevity. Data on canopy openness are also collected annually at each mist net as part of this project. Support for this work was provided by grants BSR-8811902, DEB-9411973, DEB-9705814 , DEB-0080538, DEB-0218039 , DEB-0620910 , DEB-1239764, DEB-1546686, and DEB-1831952 from the National Science Foundation to the University of Puerto Rico as part of the Luquillo Long-Term Ecological Research Program. Additional support provided by the University of Puerto Rico and the International Institute of Tropical Forestry, USDA Forest Service.
Ovenbird Mist-netting Dataset
<p>Data from a multi-year mist-netting study of ovenbirds (<em>Seiurus aurocapilla</em>) at a site in Maryland, USA.</p> <p>The text files 'ovenCHpcapt.txt' and 'ovenCHptrap.txt' contain the ovenbird mist net data of Dawson & Efford (2009) re-analysed by Efford & Schofield (2022). The data are also included in the R package 'secr' (Efford 2022) where a more complete description may be found.</p> <p>The format follows that used by 'secr', described in <a href="https://www.otago.ac.nz/density/pdfs/secr-datainput.pdf">secr-datainput.pdf</a>.</p> <p># Use this R code to re-construct the 'secr' capthist object</p> <p>library(secr)<br> ovenCHp <- read.capthist('ovenCHpcapt.txt', 'ovenCHptrap.txt',<br> detector = 'proximity')</p> <p># ... and summarise with<br> summary(ovenCHp, terse = TRUE)</p> <p> 2005 2006 2007 2008 2009<br> Occasions 9 10 10 10 10<br> Detections 41 49 57 33 35<br> Animals 20 22 26 19 16<br> Detectors 44 44 44 44 44</p> <p>'Occasions' correspond to days. Detections were binary at the level of bird x net x day. Birds could be recorded in more than one net per day.</p> <p>References</p> <p>Dawson, D. K. & Efford, M. G. (2009) Bird population density estimated from<br> acoustic signals. Journal of Applied Ecology 46: 1201-1209.</p> <p>Efford, M. G. (2022). secr: Spatially explicit capture-recapture models.<br> R package version 4.5.5. https://CRAN.R-project.org/package=secr.<br> <br> Efford, M. G. & Schofield, M. (2022) A review of movement models in open<br> population capture–recapture. Methods in Ecology and Evolution In press. </p>
Fig. 4 in Daytime Activity Of Reed Passerine Birds Based On Mist-Netting
Fig. 4. Daily activity of juvenile (black columns) and adult (dotted columns) reedbed passerines in National Nature Reserve Parížske močiare marsh in the late breeding periods of 1999–2004
Fig. 2 in Daytime Activity Of Reed Passerine Birds Based On Mist-Netting
Fig. 2. The morning (left) and evening (right) mean capture times (±SE) of reedbed passerines in National Nature Reserve Parížske močiare marsh in the late breeding periods of 1999–2004. (Llus: Locustella luscinioides (n = 293), Amel: Acrocephalus melanopogon (n = 78), Asch: A. schoenobaenus (n = 445), Apal: A. palustris (n = 112), Asci: A. scirpaceus (n = 1270), Aaru: A. arundinaceus (n =
Fig. 1 in Daytime Activity Of Reed Passerine Birds Based On Mist-Netting
Fig. 1. Capture rates of reedbed passerines mist netted in National Nature Reserve Parížske močiare marsh in the late breeding periods of 1999–2004
Fig. 3 in Daytime Activity Of Reed Passerine Birds Based On Mist-Netting
Fig. 3. Morning (white), daily (dotted) and evening (black) activity of reedbed passerines in National Nature Reserve Parížske močiare marsh in the late breeding periods of 1999–2004. (Llus: Locustella luscinioides, Amel: Acrocephalus melanopogon, Asch: A. schoenobaenus, Apal: A. palustris, Asci: A.
Figure 3. The 95 in Effects of agroecosystems on insect and insectivorous bat activity: a preliminary finding based on light trap and mist net captures
Figure 3. The 95% family-wise confidence level for multiple comparisons test based on insectivorous bat species analyses. Left: H. aff. ruber; right: H. jonesi.
Figure 2. The 95 in Effects of agroecosystems on insect and insectivorous bat activity: a preliminary finding based on light trap and mist net captures
Figure 2. The 95% family-wise confidence level for multiple comparisons test based on insect order analyses. Left: Lepidoptera; right: Diptera.
Figure 1 in Rise-Up mist-netting (RUM): a mobile protocol for trapping wary territorial birds
Figure 1. Schematics of the rise-up mist-netting (RUM) trapping protocol showing the 6 m long mist net setup between a wireless speaker and the target- ed bird while being operated by the researcher and a single assistant. The pole extremity closer to the bird must be quickly and simultaneously raised upright by both operators only after the bird reaches the point-of-no-return (i.e., the point which the bird is unable to avoid colliding to the trap), which was estimat- ed through trial-and-error to be ~ 3 m for the Rufous Hornero (Furnarius rufus).
Increasing efficiency and reducing bias in the detection of seed-dispersal interactions based on mist-netted birds
<p>Efficient and unbiased sampling of ecological interactions is essential to our understanding of the functions they mediate. Seed dispersal by frugivorous birds is a key mutualism for plant regeneration and community dynamics. Mist-netting is one of the most widely used methods to sample avian seed dispersal through the identification of seeds in droppings of captured birds kept inside cloth bags. However, birds may drop seeds on the ground before being extracted from the net, leading to a fraction of missing information due to ineffective sampling. Worryingly, this fraction could be unevenly distributed across bird and plant species, leading to sampling biases. Here, we assess the effectiveness of using a 1- m wide mesh below mist nets to sample seeds dropped by entangled birds. We used data from birds mist-netted during one-year-round. We sampled nearly 50% of interaction events and 75% of dispersed seeds on the mesh band below the mist nets (i.e. lost information without this optimization). The proportion of seeds sampled on the mesh bands was not evenly distributed among bird species but strongly related to bird size, ranging from 57-63% in warblers to 84-94% in thrushes. Moreover, the proportion of seeds sampled on the mesh was negatively related to seed size, although this relationship was weaker. We also evaluated accumulation curves of species and pairwise interactions with increasing sampling effort, both with and without using the mesh bands. The number of seed species sampled increased by 21% when using the mesh bands and the number of pairwise interactions by 36%. Our findings provide strong evidence on how inefficient and biased traditional mist-netting can be for sampling community-wide seed-dispersal interactions. We thus urge the use of mesh bands in future studies to increase sampling effectiveness and avoid biases, which will ultimately improve our understanding of the seed dispersal function.</p>
Mist netting, ringing and morphometric data of birds on Mt. Kilimanjaro
<p>Mist netting, ringing and morphometric data of birds for all plots on the land use gradient (flm: lower mountain forest, hom: Chagga home garden, cof: coffee plantation, gra: grasslands, sun: coffee plantation without tree cover).</p> <p>Acronyms: cap : capture or recapture; kd: Kipp's distance; bp: brood patch</p> <p>The KiLi project (2010-2018) is a German Science Foundation (DFG) funded research unit (DFG research unit FOR1246) that focuses on biodiversity and ecosystem processes along altitudinal and disturbance gradients on Mt. Kilimanjaro (Tanzania, Africa), capitalizing on its world-wide unique range of climatic and vegetation zones. The research unit comprises 2 central projects and 7 subprojects from various disciplines. On a total of 60 study sites in both natural and human-disturbed ecosystems biodiversity (e.g. plants, soil arthropods, ants, bees, frogs, lizards, bats, birds), related ecosystem processes (decomposition, seed dispersal, pollination, herbivory, predation), and biogeochemical processes and properties of ecosystems (climate, soil properties and nutrient status, regulation of water and carbon fluxes, trace gas emissions, primary productivity, functional diversity) are analyzed.</p>
Figure 1 in Effects of agroecosystems on insect and insectivorous bat activity: a preliminary finding based on light trap and mist net captures
Figure 1. Map of Sekyere Central District showing study area (Kwamang) in Ghana.
Increasing efficiency and reducing bias in the detection of seed-dispersal interactions based on mist-netted birds
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The elevated mist-net frame - Supporting Information: Appendices S1-S4
<p><b>Summary<b> </b></b></p> <ol> <li><span><span><span>Classic standard mist-netting limits sampling to understory birds flying <3 m above ground-level. Methodological innovations targeting higher strata birds (and bats) are important for ecological studies, particularly in tropical forests.</span></span></span></li> <li><span><span><span>I present and evaluate a method of applying elevated mist-net frames (EMF) up to ~25-30 m. I designed detachable mobile alloy frames for standard-sized 3×6 m mist-nets, weighing ~11 kg including fittings, and suspended by 3-point cable-wire mounting. State-of-the-art archery and fishing gear are employed for securing anchor-lines, with hoisting applied by pulley, ropes and guys. </span></span></span></li> <li><span><span><span>EMF is assembled and detached by 2-3 team members within 15-20 minutes, and up-down hoisting lasts 1-3 minutes. EMF excludes tree-climbing and arboreal platforms, through versatile manoeuvring in lightly-cluttered naturally open corridors. EMF costs are source and quantity dependent, and feasible to institutions and grant beneficiaries. </span></span></span></li> <li><span><span><span>EMF is a workable alternative or supplement to existing elevated mist-netting applying poles, ropes and pulleys, owing to strength and durability, replicable construction, and versatile manoeuvrability in upper strata. The EMF-design demonstrates favourable prospects for high-tech development, thus further innovations are recommended. </span></span></span></li> </ol>
Avian community mist net survey data from Luba/Ureca road elevational gradient, Bioko Island, Equatorial Guinea
<p>Understanding interactive effects between anthropogenic disturbance and abiotic factors on species turnover can help identify and prioritize conservation of potentially vulnerable tropical bird communities. We investigated potential factors influencing avian understory community composition along a recently constructed road across three elevations (300, 800 and 1200 m), each with two sampling sites (road edge vs interior forest), over a four-year period on Bioko Island, Equatorial Guinea. Obligate ant following species were the most abundant guild sampled accounting for 23% of total species diversity within the data set, which increased to 40% when including occasional ant following species. Habitat associated with elevation was the most significant factor influencing the composition of avian communities at all three elevations. Additionally, we identified species with clear statistical associations for each elevation: the yellow-lored bristlebill (Bleda notatus), olive sunbird (Cyanomitra obscura), and white-tailed warbler (Poliolias lopezi). We found evidence for significant community differences between the disturbance edge and interior forest transects at 300 m only. Likewise, understory insectivores were found at higher numbers within the interior forest transect at this elevation. Based on the data presented here, we suggest low elevation avian understory insectivores should be considered focal species for future assessment studies in this area. Furthermore, since many traditional protected areas focus on upland habitat containing high species endemism, our findings emphasize the importance of equally conserving lowland elevations as they may house commonly overlooked yet important and diverse segments of the bird community. </p>
The elevated mist-net frame - Supporting Information: Appendices S1-S4
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Avian community mist net survey data from Luba/Ureca road elevational gradient, Bioko Island, Equatorial Guinea
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Figure 4. The 95 in Effects of agroecosystems on insect and insectivorous bat activity: a preliminary finding based on light trap and mist net captures
Figure 4. The 95% family-wise confidence level for multiple comparisons test based on insect orders (top left: Lepidoptera; top right: Diptera) and insectivorous bat species (bottom left: H. aff. ruber, bottom right: H. jonesi) analyses. FM - Full moon; FQM - first quarter moon; LQM - last quarter moon; NM - new moon.
Data from: Estimating mortality rates among passerines caught for ringing with mist-nets using data from previously-ringed birds
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