Researchers demonstrate the effectiveness of eDNA in the calculation of marine biodiversity

5 days 5 hours ago
For almost 20 years, researchers at the Santa Barbara Coastal Long-Term Ecological Research (SBC LTER) site have conducted detailed censuses of the majestic kelp forests off Santa Barbara. By counting fish species and placing them in the context of their environmental conditions, UCSB coastal marine ecologist Robert Miller and his colleagues can look at the effects of human activity and natural drivers on kelp and its ability to maintain the kelp forest communities.

How light pollution affects animal orientation

5 days 7 hours ago
The growth of cities with their streetlights and illuminated buildings has led to brighter nights. This has consequences for animals: the artificial light illuminates them directly, but also lights up the sky, making the stars invisible. Yet many animals rely on the stars as their compass for orientation.

The soft 'spaghetti' of proteins that's essential for the resistance of bacteria

5 days 9 hours ago
Bacteria are increasingly resistant, especially to antibiotics, which is a major global health problem. An example, related to the pandemic? Covid weakens hospitalized people so much that we are now witnessing an upsurge in bacterial infections (resistant bacteria engulf the breach caused by the virus and further weaken patients). Research in this area is therefore essential.

Non-native species cost Europe over 116 billion Euros from 1960 to 2020

5 days 9 hours ago
Together with an international team, Senckenberg scientists have investigated the costs incurred by invasive species in Europe and Germany. In their studies, published today in the scientific journal NeoBiota, they show that in European countries, non-native species caused damage in excess of 116.61 billion Euros in the period from 1960 to 2020. In Germany, the figure for the same period is an estimated 8.21 billion Euros. According to the researchers, the expenditures increased tenfold in each decade—and the actual costs are probably many times higher.

How ERF1 regulates flowering

5 days 9 hours ago
Floral initiation must be strictly regulated to achieve reproductive success. ETHYLENE RESPONSE FACTOR1 (ERF1) functions as an important integrator of several phytohormone signals to regulate both development and stress responses. However, the underlying mechanism for its role in flowering-time regulation remained unclear.

Shoring up the corn belt's soil health with NASA satellite data

5 days 9 hours ago
After the corn harvest last fall, Illinois farmer Paul Jeschke planted a fraction of his fields with cereal rye: 60 acres of the 4,500 he farms with his wife, nephew and brother-in-law, tucked behind a pasture, out of neighbors' sight. That way they could experiment with cover crops, Jeschke explained, and no one could view potential failures.

New study shows rats can make friends

5 days 9 hours ago
Rats choose carefully who they spend time with, according to a new study published today. Published by researchers from the Universities of Portsmouth and Lincoln, the study found that male rats have preferred partners in their groups and they decide who to avoid, too.

Small proteins discovered to be regulators of the aging process

5 days 9 hours ago
Scientists have discovered that the protein ubiquitin plays an important role in the regulation of the aging process. Ubiquitin was previously known to control processes such as signal transduction and metabolism. Prof. Dr. David Vilchez and his colleagues at the CECAD Cluster of Excellence for Aging Research at the University of Cologne performed a comprehensive quantitative analysis of ubiquitin signatures during aging in the model organism Caenorhabditis elegans, a nematode worm broadly used for aging research. This method—called ubiquitin proteomics—measures all changes in ubiquitination of proteins in the cell.

Ocean microbes reveal distribution of nitrogen-fixers at a global level

5 days 9 hours ago
Nitrogen is one of the major building blocks of life. It makes up 80 percent of Earth's atmosphere and it is described as one of the most important growth-limiting nutrients for both land and marine plants. This is because the most abundant form of nitrogen—dinitrogen, or N2—is particularly stable and resistant to chemical reactions, meaning that it cannot be assimilated by most organisms. Given the important role nitrogen plays in all living matter, microbes that can 'fix' atmospheric N2 into more accessible forms for organisms are crucial components of Earth's ecosystems.
9 minutes 56 seconds ago
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