Search results for "Global climate change"
showing 6 items of 6 documents
Infection success of Echinoparyphium aconiatum (Trematoda) in its snail host under high temperature: role of host resistance
2014
Background Extreme weather events such as summer heat waves become more frequent owing to global climate change and are predicted to alter disease dynamics. This is because high temperatures can reduce host immune function. Predicting the impact of climate change on host-parasite interactions is, however, difficult as temperature may also affect parasite infective stages and other host characteristics determining the outcome of interaction. Methods Two experiments were conducted to investigate these phenomena in a Lymnaea stagnalis–Echinoparyphium aconiatum (Trematoda) interaction. In the first experiment, the effects of exposure of snails to experimental heat waves [maintenance at 25°C vs.…
GLI ANTROPOLOGI SOCIOCULTURALI E LA “SOSTENIBILITÀ”. ALCUNE PROSPETTIVE
2023
The chapter proposes a critical discussion of the notions of sustainability and sustainable development. It should be noted that the global and national policies of "sustainable development" implemented in the last thirty years have failed to stop the worsening of the planetary crisis and of climate change of anthropogenic origin at the planetary level. We then go over some of the main lines of reflection and analysis on these issues within socio-cultural anthropology
Warmer temperatures reduce the influence of an important keystone predator
2017
Predator–prey interactions may be strongly influenced by temperature variations in marine ecosystems. Consequently, climate change may alter the importance of predators with repercussions for ecosystem functioning and structure. In North-eastern Pacific kelp forests, the starfish Pycnopodia helianthoides is known to be an important predator of the purple sea urchin Strongylocentrotus purpuratus. Here we investigated the influence of water temperature on this predator–prey interaction by: (i) assessing the spatial distribution and temporal dynamics of both species across a temperature gradient in the northern Channel Islands, California, and (ii) investigating how the feeding rate of P. heli…
A hierarchical Bayesian Beta regression approach to study the effects of geographical genetic structure and spatial autocorrelation on species distri…
2019
Global climate change (GCC) may be causing distribution range shifts in many organisms worldwide. Multiple efforts are currently focused on the development of models to better predict distribution range shifts due to GCC. We addressed this issue by including intraspecific genetic structure and spatial autocorrelation (SAC) of data in distribution range models. Both factors reflect the joint effect of ecoevolutionary processes on the geographical heterogeneity of populations. We used a collection of 301 georeferenced accessions of the annual plant Arabidopsis thaliana in its Iberian Peninsula range, where the species shows strong geographical genetic structure. We developed spatial and nonsp…
Climate change policies and agendas: facing implementation challenges and guiding responses
2020
Climate policies are essential to mitigate climate change and to develop successful adaptation processes. However, there is a paucity of international studies that analyse the status of climate change policies. This paper reports on research undertaken in a sample of 13 highly diverse countries, in regards to their geography, socioeconomic development, vulnerability elements, adaptation, and climate-risks. The results draw attention to the global spread and standardisation of climate change policies, namely through the adoption of comprehensive National Adaptation Plans/Strategies (NAPs/NASs) that include mitigation measures and evaluation mechanisms. Although NAPs tend to take into account…
Globālo klimata pārmaiņu novēršanas politikas izvērtējums
2020
Bakalaura darba temats ir “Globālo klimata pārmaiņu novēršanas politikas izvērtējums”. Globālo klimata pārmaiņu jautājums pēdējo gadu laikā ir atzīts par vienu no steidzamāk risināmajām pasaules problēmām. Darba teorētisko ietvaru veido ieviešanas teorijas un dažādu ieviešanas aspektu teorijas, kā arī teorija par klimata pārmaiņu politiku. Darba empīriskajā daļā, izmantojot teorētiskajā daļā izvirzītos kritērijus, tiek analizēti septiņi Latvijas Republikas Nacionālie ziņojumi ANO Vispārējās konvencijas par klimata pārmaiņām ietvaros. Darba mērķis ir izvērtēt konvencijas saistību īstenošanas laikā veiktos klimata politikas pasākumus un to atbilstību konvencijas mērķim. Atslēgvārdi : globālās…