Using occupancy and population models to assess habitat conservation opportunities for an isolated carnivore population

Spencer, Wayne D.; Rustigian‐Romsos, Heather; Strittholt, James R.; Scheller, Robert M.; Zielinski, William J.; Truex, Richard L.

doi:10.1016/j.biocon.2010.10.027

Cited by 67 publications

(56 citation statements)

References 22 publications

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“…Long-term studies are essential for understanding the natural variability of species composition, dominance structure and the functional diversity of benthic communities in relation to natural environmental drivers, all of which are affected by climate change [79]. This study focuses on the spatial and temporal variability of the taxonomic diversity and structure of the benthic macrofauna in the intertidal zone of the Kneiss Islands, which represents an important area in the Mediterranean as regards tidal range and avian biodiversity.…”

Section: Discussionmentioning

confidence: 99%

Spatial and Temporal Structures of the Macrozoobenthos from the Intertidal Zone of the Kneiss Islands (Central Mediterranean Sea)

Mosbahi¹,

Pezy²,

Dauvin³

et al. 2016

OJMS

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The present study analyses the spatio-temporal variability of the macrozoobenthos from the intertidal zone of the Kneiss Islands (Gulf of Gabès, Tunisia). Samples were collected once from 34 stations, while seasonal variations were studied by sampling four times at 12 stations over the period 2013-2014. A total of 159 macrobenthos taxa associated with intertidal Zostera noltei beds are identified from the 34 stations, with a taxonomic dominance of crustaceans (32%), molluscs (29%) and annelids (27%). Abundance varies from 9244 to 36,844 ind·m −2 with a mean value of 14,346 ind·m −2 . Analysis of the trophic structure shows that the majority of stations are strongly represented by carnivores (41%), followed by the non-selective deposit feeders (16%). Cluster analysis and multidimensional scaling allow identification of three main benthic assemblages based on species abundance, corresponding to different sediment types and organic matter contents. The seasonal variability in abundance, diversity and community structure is mainly due to spring and summer recruitment. The biotic indices (i.e. AMBI, BO2A and BENTIX) show that the intertidal area of Kneiss Islands exhibits a good ecological status.

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Section: Discussionmentioning

confidence: 99%

Spatial and Temporal Structures of the Macrozoobenthos from the Intertidal Zone of the Kneiss Islands (Central Mediterranean Sea)

Mosbahi¹,

Pezy²,

Dauvin³

et al. 2016

OJMS

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“…Our study area was ,2.2 Â 10 6 ha of forest in the southern Sierra Nevada, CA, including portions of the Sierra, Sequoia and Stanislaus National Forests and Yosemite and Sequoia-Kings Canyon National Parks (Spencer et al 2011;Fig. 1).…”

Section: Study Areamentioning

confidence: 99%

Simulating landscape-scale effects of fuels treatments in the Sierra Nevada, California, USA

Syphard

Scheller

Ward

et al. 2011

Int. J. Wildland Fire

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In many coniferous forests of the western United States, wildland fuel accumulation and projected climate conditions increase the likelihood that fires will become larger and more intense. Fuels treatments and prescribed fire are widely recommended, but there is uncertainty regarding their ability to reduce the severity of subsequent fires at a landscape scale. Our objective was to investigate the interactions among landscape-scale fire regimes, fuels treatments and fire weather in the southern Sierra Nevada, California. We used a spatially dynamic model of wildfire, succession and fuels management to simulate long-term (50 years), broad-scale (across 2.2 Â 10 6 ha) effects of fuels treatments. We simulated thin-from-below treatments followed by prescribed fire under current weather conditions and under more severe weather. Simulated fuels management minimised the mortality of large, old trees, maintained total landscape plant biomass and extended fire rotation, but effects varied based on elevation, type of treatment and fire regime. The simulated area treated had a greater effect than treatment intensity, and effects were strongest where more fires intersected treatments and when simulated weather conditions were more severe. In conclusion, fuels treatments in conifer forests potentially minimise the ecological effects of high-severity fire at a landscape scale provided that 8% of the landscape is treated every 5 years, especially if future fire weather conditions are more severe than those in recent years.

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“…The fisher had been considered a candidate species under the California Endangered Species Act until 2010, and is currently a furbearer of special concern in this state. Nevertheless, fishers in California now exist as two genetically isolated populations (northwestern California and the southern Sierra Nevada; Davis et al, 2007;Knaus et al, 2011), and a recent estimate noted that there may be fewer than 350 total animals in the southern Sierra Nevada population (Spencer et al, 2011). Because of continued concern over the limited abundance and range extent of this species in western North America, several major studies are underway aimed at identifying population limiting factors, general habitat associations, and specific habitat requirements for resting and reproduction (Purcell et al, 2009;Zielinski et al, 2010).…”

Section: Introductionmentioning

confidence: 98%

Characterizing habitats associated with fisher den structures in the Southern Sierra Nevada, California using discrete return lidar

Zhao

Sweitzer

Guo

et al. 2012

Forest Ecology and Management

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Using occupancy and population models to assess habitat conservation opportunities for an isolated carnivore population

Cited by 67 publications

References 22 publications

Spatial and Temporal Structures of the Macrozoobenthos from the Intertidal Zone of the Kneiss Islands (Central Mediterranean Sea)

Spatial and Temporal Structures of the Macrozoobenthos from the Intertidal Zone of the Kneiss Islands (Central Mediterranean Sea)

Simulating landscape-scale effects of fuels treatments in the Sierra Nevada, California, USA

Characterizing habitats associated with fisher den structures in the Southern Sierra Nevada, California using discrete return lidar

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