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Categories: Anthropology: Early Humans, Ecology: Sea Life

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Biology: Marine Ecology: Animals Ecology: Sea Life Geoscience: Geography
Published

Rare 14-ft smalltooth sand tiger shark washes up on Irish coast      (via sciencedaily.com)     Original source 

Scientists believe a huge 14ft smalltooth sand tiger shark, which washed up at Kilmore Quay, Co. Wexford, earlier this year, represents the first of its species to have been found in Ireland's waters. Two other individuals of the same species also washed up on the UK coastline, suggesting this species' geographic range has shifted. The scientists believe these rare finds may offer a window into the future, with more and more species traditionally confined to more tropical waters expected to visit Irish and British waters.

Biology: Marine Biology: Microbiology Ecology: Sea Life Geoscience: Oceanography
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New species of marine bacteria isolated from a deep-sea cold seep      (via sciencedaily.com)     Original source 

Researchers have isolated a new strain of marine bacteria with unique characteristics from the ocean seabed.

Biology: Marine Ecology: Sea Life Geoscience: Geography Geoscience: Oceanography
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Historic red tide event of 2020 fueled by plankton super swimmers      (via sciencedaily.com)     Original source 

A major red tide event occurred in waters off Southern California in the spring of 2020, resulting in dazzling displays of bioluminescence along the coast. Now, for the first time, a study has pinpointed how the plankton species Lingulodinium polyedra -- a dinoflagellate -- was able to create such an exceptionally dense bloom. The answer lies in dinoflagellates' remarkable ability to swim, which lends them a competitive advantage over other species of phytoplankton.

Biology: Marine Ecology: Sea Life Environmental: Ecosystems Geoscience: Environmental Issues Geoscience: Oceanography
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Due to sea-ice retreat, zooplankton could remain in the deep longer      (via sciencedaily.com)     Original source 

Due to intensifying sea-ice melting in the Arctic, sunlight is now penetrating deeper and deeper into the ocean. Since marine zooplankton respond to the available light, this is also changing their behavior -- especially how the tiny organisms rise and fall within the water column. As an international team of researchers has now shown, in the future this could lead to more frequent food shortages for the zooplankton, and to negative effects for larger species including seals and whales.

Anthropology: General Archaeology: General Biology: Marine Ecology: Endangered Species Ecology: Sea Life Paleontology: Fossils Paleontology: General
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Wastewater pipe dig reveals 'fossil treasure trove'      (via sciencedaily.com)     Original source 

A new article describes the 266 fossil species as one of the richest and most diverse groups of three-million-year-old fauna ever found in New Zealand. At least ten previously unknown species will be described and named in future research. Fossils of the world's oldest known flax snails, an extinct sawshark spine, and great white shark teeth have all been found in a mound of sand excavated from beneath Mangere Wastewater Treatment Plant in 2020.

Biology: Marine Biology: Zoology Ecology: Endangered Species Ecology: Sea Life Geoscience: Environmental Issues Geoscience: Oceanography
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Loss of Antarctic sea ice causes catastrophic breeding failure for emperor penguins      (via sciencedaily.com)     Original source 

Emperor penguin colonies experienced unprecedented breeding failure in a region of Antarctica where there was total sea ice loss in 2022. The discovery supports predictions that over 90% of emperor penguin colonies will be quasi-extinct by the end of the century, based on current global warming trends.

Biology: Marine Ecology: Sea Life Geoscience: Oceanography Offbeat: Earth and Climate Offbeat: Plants and Animals
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Scientists solve mystery of why thousands of octopus migrate to deep-sea thermal springs      (via sciencedaily.com)     Original source 

Researchers used advanced technology to study a massive aggregation of deep-sea octopus gathered at thermal springs near an extinct underwater volcano off the coast of Central California. Warm water from hydrothermal springs accelerates development of octopus embryos, giving young octopus a better chance of survival. The Octopus Garden is the largest known aggregation of octopus on the planet -- the size of this nursery, and the abundance of other marine life that thrives in this rich community, highlight the need to understand and protect the hotspots of life on the deep seafloor from threats like climate change and seabed mining.

Biology: Marine Ecology: Extinction Ecology: General Ecology: Research Ecology: Sea Life Environmental: Ecosystems Geoscience: Environmental Issues
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Ice-free preservation method holds promise to protect reefs      (via sciencedaily.com) 

An interdisciplinary team of researchers demonstrated that coral can be preserved through a new technique called isochoric vitrification. This process takes the selected coral fragments through the stages of cryopreservation and subsequent revival.

Biology: Marine Biology: Molecular Ecology: Extinction Ecology: General Ecology: Research Ecology: Sea Life Environmental: Biodiversity Environmental: Ecosystems
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Researchers unearth a new process by which algae pass on nurtrients to their coral host      (via sciencedaily.com) 

Researchers have identified a new pathway by which sugar is released by symbiotic algae. This pathway involves the largely overlooked cell wall, showing that this structure not only protects the cell but plays an important role in symbiosis and carbon circulation in the ocean.

Biology: Marine Biology: Zoology Ecology: Sea Life Geoscience: Oceanography Offbeat: Earth and Climate Offbeat: Plants and Animals
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Barnacles may help reveal location of lost Malaysia Airlines flight MH370      (via sciencedaily.com)     Original source 

Geoscientists have created a new method that can reconstruct the drift path and origin of debris from flight MH370, an aircraft that went missing over the Indian Ocean in 2014 with 239 passengers and crew. 

Biology: Marine Ecology: Animals Ecology: Extinction Ecology: Sea Life Environmental: Ecosystems Geoscience: Earth Science
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Vegetarian diet of corals explains age-old mystery dating back to Darwin      (via sciencedaily.com)     Original source 

A new study has revealed why coral reefs can thrive in seemingly nutrient poor water, a phenomenon that has fascinated scientists since Charles Darwin.

Biology: Marine Biology: Zoology Ecology: Sea Life Offbeat: Plants and Animals
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This fish doesn't just see with its eyes -- it also sees with its skin      (via sciencedaily.com)     Original source 

Without a mirror, it can be hard to tell if you're blushing, or have spinach in your teeth. But one color-changing fish has evolved a clever way to keep watch on the parts of itself that lie outside its field of view -- by sensing light with its skin.

Biology: Evolutionary Biology: Marine Ecology: Invasive Species Ecology: Sea Life Paleontology: Fossils Paleontology: General
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The modern sea spider had started to diversify by the Jurassic, study finds      (via sciencedaily.com)     Original source 

An extremely rare collection of 160-million-year-old sea spider fossils from Southern France are closely related to living species, unlike older fossils of their kind.

Anthropology: Early Humans Anthropology: General Offbeat: Paleontology and Archeology
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Iceman Ötzi: Dark skin, bald head, Anatolian ancestry      (via sciencedaily.com)     Original source 

A research team has used advanced sequencing technology to analyze Ötzi's genome to obtain a more accurate picture of the Iceman's appearance and genetic origins.

Anthropology: Early Humans Anthropology: General Paleontology: Climate Paleontology: General
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Key role of ice age cycles in early human interbreeding      (via sciencedaily.com)     Original source 

Recent paleogenomic research revealed that interbreeding was common among early human species. However, little was known about when, where, and how often this hominin interbreeding took place. Using paleoanthropological evidence, genetic data, and supercomputer simulations of past climate, a team of international researchers has found that interglacial climates and corresponding shifts in vegetation created common habitats for Neanderthals and Denisovans, increasing their chances for interbreeding and gene flow in parts of Europe and central Asia.

Anthropology: Early Humans Biology: Evolutionary Paleontology: Climate
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Elephant ancestors´ teeth evolved in response to long term changes in diet and climate in Africa      (via sciencedaily.com)     Original source 

A new study shows that the cheek teeth of proboscideans (elephants and their ancient relatives) evolved in response to dietary changes due to vegetation changes and climate change in East Africa during the last 26 million years.

Biology: Marine Ecology: Sea Life Geoscience: Environmental Issues Geoscience: Oceanography
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Microplastics found embedded in tissues of whales and dolphins      (via sciencedaily.com)     Original source 

Microscopic plastic particles have been found in the fats and lungs of two-thirds of the marine mammals in a graduate student's study of ocean microplastics. The presence of polymer particles and fibers in these animals suggests that microplastics can travel out of the digestive tract and lodge in the tissues.

Anthropology: Early Humans Anthropology: General Environmental: Ecosystems Paleontology: Climate
Published

A climate-orchestrated early human love story      (via sciencedaily.com)     Original source 

A new study finds that past changes in atmospheric CO2 and corresponding shifts in climate and vegetation played a key role in determining when and where early human species interbred.