Brandt L, Benscoter A, Harvey R, Speroterra C, Bucklin D, Romañach S et al. (2017)
Comparison of climate envelope models developed using expert-selected variables versus statistical selection
Ecological Modelling 345 10-20.
Climate envelope models are widely used to describe potential future distribution of species under different climate change scenarios. It is broadly recognized that there are both strengths and limitations to using climate envelope models and that outcomes are sensitive to initial assumptions, inputs, and modeling methods Selection of predictor variables, a central step in modeling, is one of the areas where different techniques can yield varying results. Selection of climate variables to use as predictors is often done using statistical approaches that develop correlations between...
Keywords: Climate adaptation, Conservation planning, Expert opinion, Florida, Threatened and endangered species
Correa Ayram C, Mendoza M, Etter A, Pérez Salicrup D (2017)
Anthropogenic impact on habitat connectivity: A multidimensional human footprint index evaluated in a highly biodiverse landscape of Mexico
Ecological Indicators 72 895-909.
Evaluating the cumulative effects of the human footprint on landscape connectivity is crucial for implementing policies for the appropriate management and conservation of landscapes. We present an adjusted multidimensional spatial human footprint index (SHFI) to analyze the effects of landscape transformation on the remnant habitat connectivity for 40 terrestrial mammal species representative of the Trans-Mexican Volcanic System in Michoacán (TMVSMich), in western central Mexico. We adjusted the SHFI by adding fragmentation and habitat loss to its original three components: land use intensity...
Keywords: Cumulative human impact, Habitat connectivity, Mexico, Multi-species
Feldman R, Peers M, Pickles R, Thornton D, Murray D (2017)
Global Ecology and Conservation 9 1-10.
Species interactions like parasitism influence the outcome of climate-driven shifts in species ranges. For some host species, parasitism can only occur in that part of its range that overlaps with a second host species. Thus, predicting future parasitism may depend on how the ranges of the two hosts change in relation to each other. In this study, we tested whether the climate driven species range shift of Odocoileus virginianus (white-tailed deer) accounts for predicted changes in parasitism of two other species from the family Cervidae, Alces alces (moose) and Rangifer tarandus (caribou),...
Keywords: Boreal, Cervidae, Climate change, Evolution, Parasitism, Synergistic effects
Horvitz N, Wang R, Wan F, Nathan R (2017)
Pervasive human-mediated large-scale invasion: analysis of spread patterns and their underlying mechanisms in 17 of China's worst invasive plants
Journal of Ecology 105(1) 85-94.
Biological invasions constitute a major component of human-induced environmental change and have become a world-wide problem threatening global biodiversity and incurring massive economic costs. Consequently, research on biological invasions proliferates, placing a major emphasis on species traits and habitat characteristics associated with successful invasion. Yet, the mechanisms underlying rapid spread and the resulting patterns remain largely unexplored. Using data collected since 1980 and earlier at the county level all over China, we studied the contribution of potential dispersal...
Keywords: Introduction, dispersal vectors, invasion ecology, invasive species, invasive spread, jump dispersal, long-distance dispersal, minimal arrival speed, plant dispersal, spread pattern
Kennedy M, Lang P, Grimaldo J, Martins S, Bruce A, Moore I et al. (2017)
Niche-breadth of freshwater macrophytes occurring in tropical southern African rivers predicts species global latitudinal range
Aquatic Botany 136 21-30.
The study tested the hypothesis that measurement, using multivariate Principal Components Analysis (PCA), of the niche-breadth of river macrophyte species in southern tropical Africa, may predict their larger-scale biogeographical range. Two measures of niche-breadth were calculated for 44 riverine macrophyte species, from 20 families commonly occurring in Zambia, using an approach based on PCA ordination with 16 bio-physico-chemical input variables. These included altitude, stream order, stream flow, pH, conductivity and soluble reactive phosphate concentration (SRP). In the absence of...
Keywords: Africa, Aquatic plants, Benthic macroinvertebrates, Freshwater ecology, Latitudinal distribution, Niche analysis, Rivers
Pertierra L, Aragón P, Shaw J, Bergstrom D, Terauds A, Olalla-Tárraga M (2017)
Global Change Biology.
The two non-native grasses that have established long-term populations in Antarctica (Poa pratensis and Poa annua) were studied from a global multidimensional thermal niche perspective to address the biological invasion risk to Antarctica. These two species exhibit contrasting introduction histories and reproductive strategies and represent two referential case studies of biological invasion processes. We used a multistep process with a range of species distribution modelling techniques (ecological niche factor analysis, multidimensional envelopes, distance/entropy algorithms) together with a...
Keywords: Poaceae, biosecurity protocols, non-native species management, nonanalogous climate, species distribution models
Shaik R, Burrows G, Urwin N, Gopurenko D, Lepschi B, Weston L (2017)
The biology and management of prickly paddy melon (Cucumis myriocarpus L.), an important summer annual weed in Australia
Crop Protection 92 29-40.
Cucumis myriocarpus is an annual cucurbitaceous summer weed infesting fallow fields and pastures. Infestation results in reduced moisture availability for winter cereal crops as well as reduced crop yields and pasture quality. The need to manage this weed is of paramount importance given its adverse effects on farming systems, biodiversity and grazing livestock and its ranking as the number one weed of importance in Australian summer fallows of grain crops. Land management practices, including movement of grazing animals and over-stocking, are potentially assisting the spread of Cucumis...
Keywords: Agricultural weed, Biology, Field emergence and Seed biology, Self-pollination
Solberg S, Chou Y (2017)
Conservation of Indigenous Vegetables from a Hotspot in Tropical Asia: What Did We Learn from Vavilov?
Frontiers in Plant Science 7 1982.
Conservation biologists have allocated an Indo-Burma biodiversity hotspot among 34 regions around the world especially rich in plants, animals, and other species (Myers et al., 2000). More than 13,500 different vascular plant species, of which 7000 are endemic, have been detected in this hotspot (Tordoff et al., 2012). Ninety years ago, the Russian scientist Vavilov (1926) pointed to the richness of cultivated plant species and their crop wild relatives in certain areas around the world, of which the Tropical Asia Center was one of eight. Later, Zeven and Zhukovsky (1975) applied the term...
Keywords: Agricultural weed, Biology, Field emergence and Seed biology, Self-pollination
Speed J, Austrheim G (2017)
The importance of herbivore density and management as determinants of the distribution of rare plant species
Biological Conservation 205 77-84.
Herbivores are often drivers of ecosystem states and dynamics and in many situations are managed either as livestock or through controlled or exploitative hunting of wild populations. Changes in herbivore density can affect the composition of plant communities. Management of herbivore densities could therefore be regulated to benefit plant species of conservation concern. In this study we use a unique spatial dataset of large herbivores in Norway to test whether herbivore density affects the distribution of rare red-listed plant species in tundra ecosystems, and to identify regions where...
Keywords: Alpine, Biotic interactions, Conservation, Grazing, Red list, Species distribution modelling
Yang L, Hu H, Xie C, Lai S, Yang M, He X et al. (2017)
Molecular phylogeny, biogeography and ecological niche modelling of Cardiocrinum (Liliaceae): insights into the evolutionary history of endemic genera distributed across the Sino-Japanese floristic region.
Annals of botany 119(1) 59-72.
BACKGROUND AND AIMS The patterns of evolutionary assembly in the Sino-Japanese floristic region (SJFR) remain largely unknown due to a lack of integrative multidimensional studies throughout the region. To address this issue, we elucidated the evolutionary history of Cardiocrinum (Liliaceae), a genus containing four taxa distributed across the SJFR. METHODS Fifty-four populations were sampled throughout the geographical range of Cardiocrinum to assess genetic structure, analyse phylogenetic relationships and reconstruct ancestral area based on six chloroplast DNA (cpDNA) fragments and three...
Keywords: Biogeography, Cardiocrinum, Sino-Japanese Floristic Region, ecological niche modelling, phylogeny, species divergence
Peer-reviewed research citing use of biodiversity data accessed through GBIF.