T: Nature ID: 716 I: 3036 P: 17.35 C: 0.0007

Impact of climate change on microbial biodiversity Recommendation by @MIZAUCV

 ClimateDecember 2016. From University of Helsinki. The results are just published in the journal Nature Communications.

We still know fairly little about the specific impacts of climate change and human activity, such as nutrient enrichment of waterways, on broad geographical scales. Researchers from the Department of Geosciences and Geography at the University of Helsinki, the Finnish Environment Institute, and the Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences have studied hundreds of microcosms in mountainous regions with the aid of natural temperature gradients in the studied areas, while modifying the enrichment level in field tests.

The results indicate that the bacteria in elevated tropical areas are similar to e.g. those in arctic areas. As a result of changes in temperature and aquatic enrichment, significant alterations occur in the microcosms, and as the enrichment increases, biodiversity reduces, says Associate Professor Janne Soininen.


T: Nature ID: 717 I: 2841 P: 16.23 C: 0.0007

Solitary bees appear to be important pollinators of native crinklemat plants. Selection of @MIZAUCV

 BeesDecember 2016 Utah State University. Utah State University entomologist Zach Portman studies a diverse group of solitary, desert bees that aren't major pollinators of agricultural crops, but fill an important role in natural ecosystems of the American Southwest, including the sizzling sand dunes of California's Death Valley.

With Terry Griswold of the USDA-ARS Pollinating Insects Research Unit at Utah State and John Neff of the Central Texas Melittological Institute in Austin, Portman reports nine, newly identified species of the genus Perdita in the December 23, 2016, issue of Zootaxa. His research was supported by a National Science Foundation Graduate Research Fellowship awarded in 2011 and a Desert Legacy Grant from the Community Foundation.

Unexpected finds include the curious ant-like males of two of the species, which are completely different in appearance from their mates.

"It's unclear why these males have this unique form, but it could indicate they spend a lot of time in the nest," Portman says. "We may find more information as we learn more about their nesting biology."


T: Nature ID: 746 I: 2862 P: 18.11 C: 0.0007

Revista venezolana de ornitología



La Unión Venezolana de Ornitólogos (U.V.O) es una asociación civil sin fines de lucro, de carácter científico, de alcance nacional, no gubernamental, que agrupa a profesionales, estudiantes y aficionados a las aves cuyo objetivo es la promoción, difusión y el estudio de las aves en Venezuela. Para ello se propone:

1. Vincular a personas e instituciones interesadas en la ornitología y en el estudio y la observación de las aves.

2. Promover, fomentar y contribuir a organizar los estudios que conduzcan al conocimiento científico de las aves venezolanas, en particular las especies raras, endémicas, vulnerables, amenazadas y en peligro de extinción.

3. Actuar como organismo de asesoramiento y opinión ante personas e instituciones en relación con la investigación, manejo y conservación de las aves en Venezuela.

4. Funcionar como centro de almacenamiento, intercambio y difusión de información ornitológica.

5. Establecer relaciones con organizaciones gubernamentales yasociaciones afines , tanto nacionales como internacionales.

6. Organizar reuniones científicas periódicas en las que los investigadores y las instituciones intercambien experiencias y resultados.

7. Crear publicaciones periódicas u ocasionales para la difusión y comunicación científica.



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