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Populations of common birds across europe are declining

Common bird species across Europe are experiencing significant declines in population, with many providing essential services for humans such as pest control and seed dispersal. The study's findings highlight the critical importance of birds in maintaining ecosystem balance and human health.

SourceWiley·JournalEcology Letters·DateNov 4, 2014

When David beats Goliath

Research by Queen's University biologist Paul Martin found that smaller bird species can overcome size disadvantages when interacting with distantly related species. The study examined 23,362 aggressive interactions among 246 bird species pairs and identified specific traits that enhance small species' abilities in conflicts.

SourceQueen's University·JournalPLOS ONE·DateSep 24, 2014

Refined biological evolution model

A new study by Petri Kärenlampi refines the biological evolution model by incorporating species interactions and varying degrees of symmetry. The results show that anti-symmetric interactions lead to large, stable ecosystems, while symmetric systems remain small.

SourceSpringer·JournalThe European Physical Journal E·DateJul 21, 2014

Ants turn unwelcome lodgers into a useful standing army

Researchers found that permanent parasites that are normally a social burden protect their hosts against greater evils. The guest ants rise to defend their hosts against mobile raiders, greatly decreasing the probability of a raid. This co-evolutionary process maintains lesser evils when it helps prevent greater harm.

SourceUniversity of Copenhagen·JournalProceedings of the National Academy of Sciences·DateSep 9, 2013

Tree of life branches out online

A new online platform called OneZoom allows users to explore the evolutionary tree of life in an interactive and intuitive way. By zooming in on different groups of organisms, users can reveal more details about their characteristics, extinction risks, and links to additional information.

SourcePLOS·JournalPLOS Biology·DateOct 16, 2012

Gourmet butterflies speed north

A new study found that warmer summers have allowed the Brown Argus butterfly to shift its diet to wild Geranium plants, enabling it to expand its range in Britain at a rapid rate. Over 20 years, the butterfly has spread northwards by 79km, becoming common in southern England.

SourceUniversity of York·JournalScience·DateMay 24, 2012

Keeping an ear out for kin

Researchers discovered that bats can differentiate between their own and different species using individualized echolocation calls, similar to how humans recognize voices. This ability may provide an advantage in hunting grounds, while also influencing community-level interactions.

Scientists reveal driving force behind evolution

Researchers found that when bacteria evolved defences against viral infections, the viruses adapted at a quicker rate and generated greater diversity. This study supports the 'Red Queen Hypothesis', which suggests that species are in a constant race for survival and must continue to evolve new ways of defending themselves.

SourceUniversity of Liverpool·JournalNature·DateFeb 25, 2010

Parasites keep things sexy in 'hotspots'

Research finds freshwater snails reproduce more when infected with trematode parasites in shallows, supporting the Red Queen hypothesis and Geographic Mosaic Theory. Parasites enhance sexual reproduction by increasing selection on species interactions over small spatial scales.

SourceCell Press·JournalCurrent Biology·DateJul 23, 2009

Notre Dame study provides insights into how climate change might impact species' geographic ranges

Researchers found that populations at the northern edge of a species' range experienced problems when exposed to warmer conditions, contradicting the assumption that they would increase. The study used two butterfly species and found that interactions among species could change under climate change.

SourceUniversity of Notre Dame·JournalProceedings of the National Academy of Sciences·DateJun 23, 2009

New method for measuring biodiversity

Researchers develop new method to measure biodiversity, finding that most species have limited impact on ecosystem diversity. The study reveals that 'attractor' species promote biodiversity in tropical rainforests, while 'repellent' species have a negative effect.

SourceHelmholtz Association·JournalProceedings of the National Academy of Sciences·DateFeb 18, 2008

After more than 100 years apart, webworms devastate New Zealand parsnips

Researchers found that New Zealand parsnips had lower levels of chemical defenses than those in Europe and North America, making them more susceptible to the parsnip webworm. The webworms are dramatically affecting the plant's ability to reproduce, with 75% of affected plants devoid of reproductive parts.

SourceUniversity of Illinois at Urbana-Champaign, News Bureau·JournalProceedings of the National Academy of Sciences·DateJan 30, 2008