scholarly journals Niche dynamics of Memecylon in Sri Lanka: Distribution patterns, climate change effects, and conservation priorities

2021 ◽  
Author(s):  
Prabha Amarasinghe ◽  
Narayani Barve ◽  
Hashendra Kathriarachchi ◽  
Bette Loiselle ◽  
Nico Cellinese
Keyword(s):  
Climate Change ◽  
Sri Lanka ◽  
Distribution Patterns ◽  
Conservation Priorities ◽  
Climate Change Effects ◽  
Niche Dynamics

Potential distributional changes and conservation priorities of endemic amphibians in western Mexico as a result of climate change

2013 ◽  
Vol 41 (1) ◽  
pp. 1-12 ◽  
Author(s):  
ANDRÉS GARCÍA ◽  
MIGUEL A. ORTEGA-HUERTA ◽  
ENRIQUE MARTÍNEZ-MEYER
Keyword(s):  
Climate Change ◽  
Conservation Status ◽  
Distribution Patterns ◽  
Conservation Priorities ◽  
Conservation Areas ◽  
Niche Modelling ◽  
Amphibian Species ◽  
Natural Protected Areas ◽  
Western Mexico ◽  
Composite Models

SUMMARYThere is a growing concern regarding the conservation status of amphibian species worldwide; they are more threatened and declining more rapidly than mammals or birds, and Mexico is considered one of the richest countries on Earth in terms of reptile and amphibian species. Composite models of the current distribution patterns of endemic amphibians in western Mexico were used to predict their potential distributional changes as a consequence of expected climatic changes. The models identified the most significant conservation areas within the region (hotspots), considering existing natural protected areas (NPAs) and previously recognized terrestrial priority regions for conservation (TPRCs). Three niche modelling algorithms (Bioclim, GARP and MaxEnt) used 2412 locality records for 29 species to model their climate envelopes under current and future conditions for the years 2020, 2050 and 2080. The models indicated that overall species persistence was 60% for the years 2020 and 2050, but dropped to < 20% by the year 2080. The current network of NPAs included only 8% of the areas that currently possess the greatest predicted potential richness (16–21 species), and, by 2050, the models indicate they will encompass only 3% of these areas. Six TPRCs included 44% of currently predicted areas with the highest potential species richness, but, by 2050, models predicted only 3% of such areas would persist within one TPRC. Higher uncertainty levels and variability among species surrounded the 2080 projections generated by the three algorithms. Recognition of the potential effects of climate change and consideration of the conservation value of the six TPRCs identified in this study may counteract the potential consequences of climate change on biodiversity in Mexico.

Spatial assessment of climate change effects on crop suitability for major plantation crops in Sri Lanka

2011 ◽  
Vol 12 (1) ◽  
pp. 55-68 ◽  
Author(s):  
P. M. S. Jayathilaka ◽  
Peeyush Soni ◽  
Sylvain R. Perret ◽  
H. P. W. Jayasuriya ◽  
Vilas M. Salokhe
Keyword(s):  
Climate Change ◽  
Sri Lanka ◽  
Spatial Assessment ◽  
Climate Change Effects ◽  
Crop Suitability ◽  
Plantation Crops

scholarly journals Climate change shifts abiotic niche of temperate skates towards deeper zones in the Southwestern Atlantic Ocean

2021 ◽  
Author(s):  
Jéssica Fernanda Ramos Coelho ◽  
Sergio Maia Queiroz Lima ◽  
Flávia de Figueiredo Petean
Keyword(s):  
Climate Change ◽  
Environmental Changes ◽  
Climate Change Impacts ◽  
Aquatic Organisms ◽  
Niche Overlap ◽  
Distribution Patterns ◽  
Niche Dynamics ◽  
Southwestern Atlantic Ocean ◽  
Climatic Scenarios ◽  
Suitable Environment

ABSTRACTClimatic changes are disrupting distribution patterns of populations through shifts in species abiotic niches and habitat loss. The abiotic niche of marine benthic taxa such as skates, however, may be more climatically stable compared to upper layers of the water column, in which aquatic organisms are more exposed to immediate impacts of warming. Here, we estimate climate change impacts in Riorajini, a tribe of four skates, as a proxy to (1) evaluate the vulnerability of a temperate coastal zone in the Atlantic Southwest, and (2) study niche dynamics in a scenario of environmental changes on this group of threatened species. We modelled each species abiotic niche under present (2000–2014) and future (2100, Representative Concentration Pathway 8.5) climatic scenarios, then measured niche overlap, stability, expansion, and unfilling. Our results reveal an expansion of suitable environment for the occurrence of the tribe in up to 20% towards deeper areas (longitudinal shift), although still within the limits of the continental shelf. We discussed the downfalls of such shift to the species and to the local biota in newly invaded areas, and suggest that even deeper layers of marine temperate zones are vulnerable to dramatic environmental changes as a consequence of global warming.

Assessment of aquifers groundwater storage for the mitigation of climate change effects

2016 ◽  
Vol 39 ◽  
pp. 89-92 ◽  
Author(s):  
Luca Alberti ◽  
Martino Cantone ◽  
Loris Colombo ◽  
Gabriele Oberto ◽  
Ivana La Licata
Keyword(s):  
Climate Change ◽  
Groundwater Storage ◽  
Climate Change Effects

Estimating Climate Change Effects on Installation Energy Use

2012 ◽  
Author(s):  
Ronald Filadelfo ◽  
Jonathon Mintz ◽  
Daniel Carvell ◽  
Alan Marcus
Keyword(s):  
Climate Change ◽  
Energy Use ◽  
Climate Change Effects

Forecasting Climate Change Effects on Infectious Diseases—Not Simple

2008 ◽  
Vol 3 (2) ◽  
pp. 57-58
Author(s):  
Jeffrey L. Fox
Keyword(s):  
Climate Change ◽  
Infectious Diseases ◽  
Climate Change Effects

scholarly journals Early mortality and freshwater forage fish recruitment: nonnative alewife and native rainbow smelt interactions in Lake Champlain

2019 ◽  
Vol 76 (5) ◽  
pp. 806-814
Author(s):  
Paul W. Simonin ◽  
Lars G. Rudstam ◽  
Patrick J. Sullivan ◽  
Donna L. Parrish ◽  
Bernard Pientka
Keyword(s):  
Climate Change ◽  
Distribution Patterns ◽  
Mortality Rates ◽  
Early Mortality ◽  
Fish Distribution ◽  
Change Scenario ◽  
Lake Champlain ◽  
Species Introduction ◽  
Rainbow Smelt ◽  
Fish Recruitment

We studied the consequences of a nonnative species introduction and changes in temperature on early mortality and recruitment of native rainbow smelt (Osmerus mordax) and nonnative alewife (Alosa pseudoharengus) in Lake Champlain using a simulation model. Distribution patterns of adults and young-of-the-year (YOY) fish were predicted using a model based on observed distribution of different age groups as a function of temperature and light profiles simulated on a daily basis. Mortality rates averaged over the growing season were calculated as a function of fish densities and overlap between adults and YOY. Survival of YOY rainbow smelt and alewife depended on which predator was most abundant. Rainbow smelt YOY mortality rates are highest when rainbow smelt adults are abundant, and alewife YOY mortality rates are highest when alewife adults are abundant, potentially allowing coexistence. August and September mortality rates were higher in the climate change scenario because of increased overlap of adults and YOY of both species. These results indicate that accounting for spatiotemporal fish distribution patterns can be important when forecasting the interacting effects of climate change and aquatic invasive species on fish recruitment.

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