Paradigm Shifts in Habitat Ecology of Threatened Newfoundland Martens
We evaluated multiscale habitat selection by threatened Newfoundland (Canada) martens (Martes americana atrata) across landscapes composed of a range of habitat types to test the hypothesis that martens preferred mature (61–80-yr-old) and overmature (>80 yr) conifer stands. At both the landscape...
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description | We evaluated multiscale habitat selection by threatened Newfoundland (Canada) martens (Martes americana atrata) across landscapes composed of a range of habitat types to test the hypothesis that martens preferred mature (61–80-yr-old) and overmature (>80 yr) conifer stands. At both the landscape and stand scales, adult (≥1 yr) resident martens (n = 58, 92 yr-specific home ranges) selected for, or used in proportion to availability, a broad range of habitat types, including recent cuts ≤5 yr old, regenerating forest 29% younger aged forest. Maintaining resident martens in landscapes where forest harvesting is occurring requires prescriptions that recognize the highly fragmented nature of the natural landscape, the prevalence of mature and overmature forest, younger forests, avoided land-cover types, and human access. |
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At both the landscape and stand scales, adult (≥1 yr) resident martens (n = 58, 92 yr-specific home ranges) selected for, or used in proportion to availability, a broad range of habitat types, including recent cuts ≤5 yr old, regenerating forest <6.5 m, precommercially thinned stands, and mature and overmature forest. Marten home ranges were not dominated by mature and overmature forest; median availability of mature and overmature forest within individual home ranges was only 30% (range = 11–76%). Age distributions were not different among martens with high, intermediate, and low quantity of mature and overmature forest in their home range; our data do not indicate that martens inhabiting ranges with little mature and overmature forest were compromising fitness. Habitat selection by martens in Newfoundland was more generalized than has traditionally been inferred, and we suggest that inherent landscape fragmentation, in combination with absence of many predators and competitors (i.e., ecological release), caused the Newfoundland marten to evolve to use a more generalized habitat niche than many mainland populations of American martens. We recommend that landscapes suitable for marten not exceed >29% younger aged forest. Maintaining resident martens in landscapes where forest harvesting is occurring requires prescriptions that recognize the highly fragmented nature of the natural landscape, the prevalence of mature and overmature forest, younger forests, avoided land-cover types, and human access.</description><identifier>ISSN: 0022-541X</identifier><identifier>EISSN: 1937-2817</identifier><identifier>DOI: 10.2193/2009-138</identifier><identifier>CODEN: JWMAA9</identifier><language>eng</language><publisher>Oxford, UK: The Wildlife Society</publisher><subject>Age ; Animal behavior ; Birds ; Coniferous forests ; Conifers ; Data processing ; Field study ; Fitness ; Forest ecology ; Forest habitats ; Forest regeneration ; Forest stands ; Forests ; Habitat ; Habitat conservation ; Habitat selection ; Habitats ; Harvesting ; Home range ; Land cover ; Landscape ; Mammals ; MANAGEMENT AND CONSERVATION ; marten ; Martens ; Martes americana ; Martes americana atrata ; Mortality ; Newfoundland ; Niches ; Predators ; preference ; scale ; selection ; Small mammals ; Wildlife management</subject><ispartof>The Journal of wildlife management, 2010-05, Vol.74 (4), p.719-728</ispartof><rights>The Wildlife Society</rights><rights>2010 The Wildlife Society</rights><rights>Copyright Allen Press Publishing Services May 2010</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-b4484-fec1660e8ebb2dec3b0e3b4ee7e9fc864ab0fe0bcdbb2b5ea861a7873f6d8193</citedby><cites>FETCH-LOGICAL-b4484-fec1660e8ebb2dec3b0e3b4ee7e9fc864ab0fe0bcdbb2b5ea861a7873f6d8193</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/40665104$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/40665104$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>314,780,784,803,1416,27923,27924,45573,45574,58016,58249</link.rule.ids></links><search><creatorcontrib>HEARN, BRIAN J.</creatorcontrib><creatorcontrib>HARRISON, DANIEL J.</creatorcontrib><creatorcontrib>FULLER, ANGELA K.</creatorcontrib><creatorcontrib>LUNDRIGAN, CYRIL G.</creatorcontrib><creatorcontrib>CURRAN, WILLIAM J.</creatorcontrib><title>Paradigm Shifts in Habitat Ecology of Threatened Newfoundland Martens</title><title>The Journal of wildlife management</title><description>We evaluated multiscale habitat selection by threatened Newfoundland (Canada) martens (Martes americana atrata) across landscapes composed of a range of habitat types to test the hypothesis that martens preferred mature (61–80-yr-old) and overmature (>80 yr) conifer stands. At both the landscape and stand scales, adult (≥1 yr) resident martens (n = 58, 92 yr-specific home ranges) selected for, or used in proportion to availability, a broad range of habitat types, including recent cuts ≤5 yr old, regenerating forest <6.5 m, precommercially thinned stands, and mature and overmature forest. Marten home ranges were not dominated by mature and overmature forest; median availability of mature and overmature forest within individual home ranges was only 30% (range = 11–76%). Age distributions were not different among martens with high, intermediate, and low quantity of mature and overmature forest in their home range; our data do not indicate that martens inhabiting ranges with little mature and overmature forest were compromising fitness. Habitat selection by martens in Newfoundland was more generalized than has traditionally been inferred, and we suggest that inherent landscape fragmentation, in combination with absence of many predators and competitors (i.e., ecological release), caused the Newfoundland marten to evolve to use a more generalized habitat niche than many mainland populations of American martens. We recommend that landscapes suitable for marten not exceed >29% younger aged forest. Maintaining resident martens in landscapes where forest harvesting is occurring requires prescriptions that recognize the highly fragmented nature of the natural landscape, the prevalence of mature and overmature forest, younger forests, avoided land-cover types, and human access.</description><subject>Age</subject><subject>Animal behavior</subject><subject>Birds</subject><subject>Coniferous forests</subject><subject>Conifers</subject><subject>Data processing</subject><subject>Field study</subject><subject>Fitness</subject><subject>Forest ecology</subject><subject>Forest habitats</subject><subject>Forest regeneration</subject><subject>Forest stands</subject><subject>Forests</subject><subject>Habitat</subject><subject>Habitat conservation</subject><subject>Habitat selection</subject><subject>Habitats</subject><subject>Harvesting</subject><subject>Home range</subject><subject>Land cover</subject><subject>Landscape</subject><subject>Mammals</subject><subject>MANAGEMENT AND CONSERVATION</subject><subject>marten</subject><subject>Martens</subject><subject>Martes americana</subject><subject>Martes americana atrata</subject><subject>Mortality</subject><subject>Newfoundland</subject><subject>Niches</subject><subject>Predators</subject><subject>preference</subject><subject>scale</subject><subject>selection</subject><subject>Small mammals</subject><subject>Wildlife 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J.</au><au>FULLER, ANGELA K.</au><au>LUNDRIGAN, CYRIL G.</au><au>CURRAN, WILLIAM J.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Paradigm Shifts in Habitat Ecology of Threatened Newfoundland Martens</atitle><jtitle>The Journal of wildlife management</jtitle><date>2010-05</date><risdate>2010</risdate><volume>74</volume><issue>4</issue><spage>719</spage><epage>728</epage><pages>719-728</pages><issn>0022-541X</issn><eissn>1937-2817</eissn><coden>JWMAA9</coden><abstract>We evaluated multiscale habitat selection by threatened Newfoundland (Canada) martens (Martes americana atrata) across landscapes composed of a range of habitat types to test the hypothesis that martens preferred mature (61–80-yr-old) and overmature (>80 yr) conifer stands. At both the landscape and stand scales, adult (≥1 yr) resident martens (n = 58, 92 yr-specific home ranges) selected for, or used in proportion to availability, a broad range of habitat types, including recent cuts ≤5 yr old, regenerating forest <6.5 m, precommercially thinned stands, and mature and overmature forest. Marten home ranges were not dominated by mature and overmature forest; median availability of mature and overmature forest within individual home ranges was only 30% (range = 11–76%). Age distributions were not different among martens with high, intermediate, and low quantity of mature and overmature forest in their home range; our data do not indicate that martens inhabiting ranges with little mature and overmature forest were compromising fitness. Habitat selection by martens in Newfoundland was more generalized than has traditionally been inferred, and we suggest that inherent landscape fragmentation, in combination with absence of many predators and competitors (i.e., ecological release), caused the Newfoundland marten to evolve to use a more generalized habitat niche than many mainland populations of American martens. We recommend that landscapes suitable for marten not exceed >29% younger aged forest. Maintaining resident martens in landscapes where forest harvesting is occurring requires prescriptions that recognize the highly fragmented nature of the natural landscape, the prevalence of mature and overmature forest, younger forests, avoided land-cover types, and human access.</abstract><cop>Oxford, UK</cop><pub>The Wildlife Society</pub><doi>10.2193/2009-138</doi><tpages>10</tpages></addata></record> |
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subjects | Age Animal behavior Birds Coniferous forests Conifers Data processing Field study Fitness Forest ecology Forest habitats Forest regeneration Forest stands Forests Habitat Habitat conservation Habitat selection Habitats Harvesting Home range Land cover Landscape Mammals MANAGEMENT AND CONSERVATION marten Martens Martes americana Martes americana atrata Mortality Newfoundland Niches Predators preference scale selection Small mammals Wildlife management |
title | Paradigm Shifts in Habitat Ecology of Threatened Newfoundland Martens |
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