News Update on Biodiversity Research: March – 2019

Climate Impact on fresh Biodiversity: General Patterns in Extreme Environments of North-Eastern Siberia (Russia)

Aims: The aims of this study are to reveal the response of high latitude riverine organism protoctist communities in northeastern Siberia to extreme weather conditions of its habitats.

Study Design: we tend to enforced numerous applied mathematics strategies, that represent some new approaches in fresh protoctist diversity analysis.

Place and period of Study: Institute of Evolution, University of city, Israel, Institute for Biological issues of Cryolithozone SB RAS, Russia, between June 2008 and January 2014.

Methodology: we tend to collected 800 samples of plant life from four hundred sites of twelve northeastern Siberian rivers in gradients of environmental condition and chemical variables that we analyzed. New indices – Geo-associated and Dynamic environment Index were enclosed during this analysis. applied mathematics strategies for comparative floristic analyses were used for scheming the similarity of protoctist communities among the sampling stations. multiple correlation stepwise applied mathematics analysis on plant life as well as chemical and environmental condition variables information was performed. Species diversity in protoctist communities and their environmental variables relationships were calculated.

Results: As a result, 1283 species (1637 taxa of species and infraspecies) from six assortment divisions were known in plant life communities. Species richness as an entire multiplied to the north. Abundance and biomass were extremely correlative. 2 kinds of plant life communities were identified: a southern community with increasing diatoms and a northern cluster with decreasing diatoms to the north. Diatoms prevailed however were replaced by alga in high mountains or by inexperienced and Chrysophyta algae and eubacterium within the Arctic. we tend to unconcealed major variables that thought-about stimulating or stress factors with helps of applied mathematics prorgams.

Conclusion: applied mathematics analyses of plant life in twelve massive rivers unconcealed a rise in species richness to the north with community structure ever-changing below stimulation of air temperature, unfrozen periods, humidity, and organic process variables were stimulants and water transparency and speed flow were thought-about stress factors. [1]

Cascade impact of Climate Warming: Snow length – field mouse Population Dynamics – diverseness

Several recent reports have presented evidence indicating a change in arvicolid rodent dynamics from high-amplitude density cycles to acyclic fluctuations at relatively low level. The data come mostly from Northern Europe (>60° N) and indicate that the change is caused by climate warming, most pronounced in the winter. In this report we present data showing similar changes in the dynamics of two vole species, Microtus oeconomus and M. arvalis, in open habitats of Poland (<54°N) over last 25 y. Fairly regular fluctuations observed until early 1990s, subsequently changed to become more erratic. We tested which winter weather factors were most important for successful overwintering of M. oeconomus in Białowieża over 12 years, and how those factors changed over the last half-century according to the data from the local meteorological station. Finally, we demonstrate that the fall in the abundance of small game over the last 20 years has been linked to the decline of vole abundance. [2]

 

Reference

[1] Barinova, S., Gabyshev, V., & Gabysheva, O. (2018). Climate Impact on Freshwater Biodiversity: General Patterns in Extreme Environments of North-Eastern Siberia (Russia). International Journal of Environment and Climate Change4(4), 423-443. https://doi.org/10.9734/BJECC/2014/9530

[2] Gliwicz, J., & Jancewicz, E. (2016). Cascade Effect of Climate Warming: Snow Duration – Vole Population Dynamics – Biodiversity. International Journal of Environment and Climate Change6(1), 43-52. https://doi.org/10.9734/BJECC/2016/25313

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