Patch-burn grazing provides resources for upland-nesting ducks
نویسندگان
چکیده
Contemporary rangeland management has expanded from a focus on forage and livestock production to multi-use practices that include concepts like biodiversity natural disturbance regimes. Patch-burn grazing (PBG) been promoted as land practice can restore vegetation structural heterogeneity subsequently increase diversity of higher trophic levels, such grassland birds. However, little is known about how the diverse assemblage upland-nesting ducks responds disturbances interacting fire within PBG framework. divides pasture into equal proportions (i.e., patches) burns an individual patch annually reduce residual attract grazing. Upland-nesting are generally thought require dense structure associated with areas low for nesting. prescribed essential conservation grasslands. may negatively affect in recently burned patches, but also support through provisioning greater patches year(s) since (YSF) could be viable strategy meet duck objectives. To assess compatibility conservation, we estimated nest site selection survival nests private lands managed unglaciated plains prairie pothole region North Dakota, USA. We located 478 four species: 230 Blue-winged Teal (Spatula discors), 72 Gadwall (Mareca strepera), 71 Mallard (Anas platyrhynchos), 105 Northern Pintail (A. acuta). Teal, Gadwall, selected ≥ 2 YSF avoided ≤ 1 patches. Year(s) affected differently indicating importance variable resulting Additionally, decreased litter accumulation increased Gadwall. Our findings indicate created nesting later found contrasting effects certain species. High was limited single does not necessarily limit activity adjacent having high survival. Additional strategies required ensure > consists characteristics will activity. Given our results, it appears line objectives, given need multi-objective management, this good choice managers interested game non-game goals.
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ژورنال
عنوان ژورنال: Avian Conservation and Ecology
سال: 2023
ISSN: ['1712-6568']
DOI: https://doi.org/10.5751/ace-02417-180113