Impacts and management of duck-nest predation: the managers' view

West, Ben C.; Messmer, Terry A.

doi:10.2193/0091-7648(2004)032[0772:iamodp]2.0.co;2

Cited by 12 publications

(8 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Passerine abundance appears to be influenced by landscape composition at scales of 200-1,600 m from breeding sites (Brotons et al 2005, Cunningham and Johnson 2006, Ribic et al 2009), spatial scales smaller than those influencing prairie-nesting waterfowl (Horn et al 2005, Stephens et al 2005. Predation is the primary factor affecting reproductive success in grasslands for waterfowl (Greenwood et al 1995, West andMessmer 2004) and songbirds (Winter 1999, Davis 2003 and is an influential driver of habitat selection in birds (Martin 1993(Martin , 1998. However, predators on waterfowl such as striped skunk (Mephitis mephitis) and red fox (Vulpes vulpes) are likely influenced by landscape composition at larger spatial scales (Phillips et al 2003) than the small mammalian predators of ground-nesting passerines (Pietz and Granfors 2000, Renfrew and Ribic 2008, Davis et al 2012).…”

Section: Discussionmentioning

confidence: 99%

Songbird abundance in native and planted grassland varies with type and amount of grassland in the surrounding landscape

et al. 2013

View full text Add to dashboard Cite

Agriculture and wildlife conservation programs have converted vast amounts of cropland into grasslands planted with exotic species. Understanding how landscape context influences avian use of native and planted grasslands is essential for developing effective conservation strategies in agricultural landscapes. Our primary objective was to determine the extent to which the amount and type of grassland in the surrounding landscape influences the abundance of grassland songbird species on native and planted grassland parcels in southern Saskatchewan and Alberta, Canada. Bird abundance was more strongly influenced by the amount and type of grassland within 400 m of breeding parcels than at larger spatial scales. Grassland specialists responded similarly to habitat and landscape type over both years and provinces. Sprague's pipit (Anthus spragueii) and Baird's sparrow (Ammodramus bairdii) were most common in native grassland parcels surrounded by native grassland and were more likely to occur in planted grasslands surrounded by native grassland. Bobolinks (Dolichonyx oryzivorus) were most common in planted grassland parcels, but their abundance increased with the amount of native grassland surrounding these parcels. Our findings indicate that the suitability of planted grasslands for these species is influenced by their proximity to native grassland. Grassland generalists showed mixed responses to habitat and landscape type over the 2 years (Le Conte's sparrow [Ammodramus leconteii]) and between provinces (Savannah sparrow [Passerculus sandwichensis] and western meadowlark [Sturnella neglecta]). Management to benefit grassland specialists should therefore consider the landscape context when seeding cultivated land to non‐native grassland and conserve extant native grassland. © 2013 The Wildlife Society.

show abstract

Section: Discussionmentioning

confidence: 99%

Songbird abundance in native and planted grassland varies with type and amount of grassland in the surrounding landscape

et al. 2013

View full text Add to dashboard Cite

show abstract

“…For most species of animals, predation is a significant source of mortality, and can affect the viability of populations (Sabo 2008;Calsbeek and Cox 2010). Understanding the identity of predators, and the rates and determinants of their effects on a cohort of recruits, can provide a valuable background for attempts to exploit, control or conserve populations (West and Messmer 2004;Teunissen et al 2008;Norbury and Heyward 2008). Intuition suggests that understanding predation in this way will be significant primarily in the case of small and highly vulnerable taxa, and unimportant for large and formidable species that are more likely to act as predators than as prey.…”

Section: Introductionmentioning

confidence: 99%

It's a dog‐eat‐croc world: dingo predation on the nests of freshwater crocodiles in tropical Australia

Somaweera

Webb

Shine

2011

Ecological Research

View full text Add to dashboard Cite

Predation on eggs is an important source of mortality for many long-lived organisms, but causes of egg mortality from specific predators remain poorly known in most cases. Understanding the identity of predators, and the rates and determinants of their effects on a cohort of recruits, can provide a valuable background for attempts to exploit, control or conserve populations. We used remotely triggered cameras to study predation on the nests of freshwater crocodiles (Crocodylus johnstoni) inhabiting Lake Argyle, in tropical Australia. We also supplemented our work on natural crocodile nests with artificial nests. Overall, 80 of 111 natural nests were opened by predators, and predation occurred throughout the study period (7 weeks). Unlike in other parts of the species' range, most nestrobbers were dingoes (Canis lupus dingo, responsible for 98% of all predator visits in the northern sites, and 54% in the Ord River site), with minimal additional predation by reptiles and birds. Contrary to expectation, rates of nest predation were not influenced by spatial clumping of nests: the probability of predation per nest did not change with total numbers of nests laid in an area, and artificially aggregated versus dispersed nests experienced similar levels of predation. Nest vulnerability was linked to abiotic features including slope of surrounding banks, compactness of nesting substrate, and distance from the nearest forest. Abundant aquatic food resources support a large crocodile population, but a lack of suitable nestsites forces the crocodiles to concentrate nesting in small areas readily accessible to wide-ranging nest predators. Collectively, our results suggest that distinctive attributes of the lakeside landscape alter predator guilds and fashion unique predator-prey interactions.

show abstract

“…In an effort to improve regional nest success, waterfowl managers have used a variety of techniques aimed at increasing suitable nesting cover and decreasing predation (see West and Messmer 2004). That elevated overwater artificial nesting structures increase waterfowl production is not a new concept (e.g., Bishop and Barratt 1970).…”

Section: Introductionmentioning

confidence: 99%

Mallard Use of Hen HousesTM in Eastern Ontario

Zimmerling¹,

Fisher²,

Ankney³

et al. 2006

ACE

View full text Add to dashboard Cite

ABSTRACT. Nesting structures for ground-nesting waterfowl may be an effective technique for increasing nesting success in regions in which nest success is below the 15% threshold needed to maintain a stable population. We studied the occupancy rate of artificial nesting structures called hen houses TM by Mallards (Anas platyrhynchos) nesting in two different wetland habitats, beaver ponds and sewage lagoons, in eastern Ontario during 1999-2001. We hypothesized that, because natural cover was sparse on sewage lagoons, Mallards would occupy hen houses at a higher rate on sewage lagoons than on beaver ponds. However, of the 248 hen houses distributed between beaver ponds and sewage lagoons, none was occupied by waterfowl. Common Grackles (Quiscalus quiscula) were the only avian species that nested in hen houses. However, Mallards successfully nested directly under several structures (n = 6) when water levels were low enough to expose the ground beneath them. Mayfield daily nest survival estimates for Mallards nesting in natural cover were similar on sewage lagoons and beaver ponds for all years (mean = 0.99) and were higher than most published estimates. Factors such as nesting cover, predation pressures, and structure design and material may influence the use of artificial hen houses and should be considered when planning a hen house program outside of the Prairie Pothole Region.RÉSUMÉ. Des nichoirs conçus pour les espèces de sauvagine nichant sur le sol peuvent s'avérer une technique efficace pour accroître le succès de la reproduction dans les régions où ce succès est inférieur au seuil de 15 % nécessaire au maintien d'une population stable. Pendant la période de 1999 à 2001, nous avons étudié le taux d'occupation de structures de nidification artificielles appelées hen house MD par les Canards colverts (Anas platyrhynchos) nichant dans deux types d'habitats humides de l'est de l'Ontario, soit des étangs de castor et des bassins de stabilisation des eaux usées. Nous avons émis l'hypothèse selon laquelle la proportion de nichoirs occupés par le Canard colvert serait plus élevée dans les bassins de stabilisation que dans les étangs de castor parce que le couvert naturel était plus clairsemé dans les bassins. Cependant, aucun des 248 nichoirs répartis entre les étangs de castor et les bassins de stabilisation des eaux usées n'a été occupé par la sauvagine. Le Quiscale bronzé (Quiscalus quiscula) est la seule espèce aviaire qui a utilisé ces nichoirs. Cependant, le Canard colvert s'est reproduit avec succès sous plusieurs de ces structures (n = 6) quand les niveaux d'eau étaient suffisamment bas pour que le sol sous-jacent soit exposé. Chez les Canards colverts nichant dans des microhabitats naturels, les estimations du taux journalier de survie au nid selon la méthode de Mayfield étaient très similaires dans les bassins de stabilisation et les étangs de castor pour toutes les années (moyenne = 0,99) et supérieures à la plupart des valeurs publiées. Des facteurs comme le degré de couvert végétal au nid, la pression ...

show abstract

Impacts and management of duck-nest predation: the managers' view

Cited by 12 publications

References 12 publications

Songbird abundance in native and planted grassland varies with type and amount of grassland in the surrounding landscape

Songbird abundance in native and planted grassland varies with type and amount of grassland in the surrounding landscape

It's a dog‐eat‐croc world: dingo predation on the nests of freshwater crocodiles in tropical Australia

Mallard Use of Hen HousesTM in Eastern Ontario

Contact Info

Product

Resources

About