Scientists continue to sound the alarm for sharks and rays based on their extensive research. This new study finds overfishing has halved shark and ray populations since 1970. The study also highlights that the overfishing of the largest species in nearshore and pelagic habitats could eliminate up to 22 per cent of ecological functions. https://lnkd.in/ep_-RTBF
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A look at the field studies of measuring the hydraulic, ecological, and morphological characteristics of the water requirement estimation project of the Sefidroud watershed #hydraulic_river #Hydromorphological #fish_habitat #Ecohydraulic In the investigation and calculation of the water needs of rivers, the type and composition of aquatic animals, especially fish, should be considered. The recognition, biological and ecological investigation of different fish species in an aquatic ecosystem has caused the conservation and restoration of their stocks, and in this regard, all of them, economic and non-economic, are of great importance and value due to their role in aquatic ecosystems. #Ecological_studies #river_flow #data_mining #hydraulic_river #Hydromorphological #fish_habitat #Ecohydraulic
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Invasive lionfish continue conquering global marine ecosystems: The Mediterranean Sea, the largest enclosed sea on Earth, is a unique ecosystem that is now threatened by invasive lionfish. #EarthDotCom #EarthSnap #Earth
Invasive lionfish continue conquering global marine ecosystems
earth.com
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Would a New DNA Database Be Able to Save This Magnificent Sea Turtle? 🐢 With climate change and the ongoing illegal traffic in its beautiful shells posing serious risks to the hawksbill sea turtle, a new DNA database called ShellBank holds out hope for conservation. Researchers can now track the provenance of products made from confiscated turtles by genetically "fingerprinting" these amazing reptiles. This helps to stop poaching and helps focus vital protections on the most vulnerable populations. 🌍 These hardworking "gardeners of the coral reef" play an essential role in the health of tropical ecosystems. However, with an 80% fall in population over the last century, immediate action is required to protect their future. ShellBank is working with local law enforcement and researchers in 28 countries to gather and analyze genetic data, destroying the illegal trade one shell at a time.🔍 By revealing the secrets hidden in hawksbill turtle DNA, we can now shed light on where protections are most needed, giving this iconic species a fighting opportunity to recover and thrive. 🐢 https://lnkd.in/e7scd_J3 Photograph by Shane Gross
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🌌 **New Research Alert** 🌌 New findings reveal that artificial light at night (ALAN) creates an "ecological trap" for larval fish, drawing them away from naturally lit habitats and significantly reducing their survival rates. This discovery has major implications for fish conservation and fishing stock management. "Light pollution is a vast subject with many unknowns," says Jules Schligler, a Ph.D. student at CRIOBE Laboratory in Moorea, French Polynesia. ALAN, caused by human activities like road lights and coastal developments, impacts a quarter of the world's coastlines, with this figure increasing yearly. Schligler's research on tropical fish shows that ALAN attracts 2-3 times more fish than natural light, but harms their growth, metabolic rate, and survival. This misguidance creates an anthropogenic stressor, highlighting the need to consider light pollution in marine conservation policies. The authors conclude that simple steps, like shielding lights and preventing them from flooding the coast, can quickly reduce this threat. We at DarkSky could not agree more. https://lnkd.in/gDaJndah #LightPollution #FishConservation #MarineBiology #ALAN #EcologicalTrap #EnvironmentalScience
Artificial light is a deadly siren song for young fish
phys.org
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Our knowledge of aquatic invertebrate diversity in Alberta is not fully complete. To date, approximately 1200 species of aquatic invertebrates are known to occur in Alberta, with diversity estimates as high as 3000+ species. The ABMI has collected ~675 distinct taxonomic groups so far (both genera and species). But why monitor aquatic invertebrates? Here's our reasoning: 💧Aquatic invertebrates drive many of the biological processes that support aquatic ecosystems, and allow those ecosystems to function effectively. 💧Aquatic invertebrates fill diverse ecological roles, allowing them to show responses to natural and anthropogenic disturbance from a variety of sources. 💧Aquatic invertebrates are easy to sample, can be identified using available taxonomic keys, and have well-known life histories. 💧Aquatic invertebrates are proven indicators of aquatic ecosystem health, being commonly used in many lotic watershed assessments. Learn more about the aquatic invertebrates we monitor on our Biodiversity Browser: https://lnkd.in/gg-ysiDh 📸 Rob Hinchliffe #ABMI #ABMIatWork #AquaticInvertebrates #FabPhotoFriday
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Acarina are frequently collected in #macroinvertebrate surveys to monitor #freshwater ecosystems. These microscopic, aquatic arachnids play crucial roles in nutrient cycling. As bioindicators, changes in their abundance and diversity can signal shifts in #waterQuality and #ecosystemHealth, making them valuable tools for freshwater ecosystem monitoring and conservation efforts. C&R regularly assess macroinvertebrate populations to determine the health of aquatic ecosystems. After collecting field samples, we count and identify the specimens in our #laboratory – before evaluating these data in terms of habitat conditions. For more on C&R’s capabilities, contact us or visit our website: https://lnkd.in/gZM3W-U #aquaticEcology #environmentalMonitoring #CnRexpertise
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So important to understand and conserve our apex predators. Recent papers have reinforced an understanding of their amazing intelligence and the critical role they play in the ocean ecosystem.
🚨🦈 New study published in Science Magazine reveals the outsized role #sharks play in maintaining #biodiversity and ecosystem health. Sharks, often misunderstood, are critical to the health of marine environments. From the tropics to polar waters, and from the surface to the #deepsea, there are over 500 species of sharks that play a variety of roles in the ocean. 🌎 Recent research highlights how these magnificent creatures act as ecosystem architects. For example, the largest shark species help maintain healthy seagrass ecosystems, making them more resilient to extreme climate events. This vital role underscores the importance of sharks in the ocean's complex web of life. Unfortunately, sharks are in trouble. Overfishing, habitat loss, and climate change threaten their populations. The global commitments to fisheries reform and #30x30 provide a unique opportunity to include them as key components of biodiversity restoration efforts. By protecting sharks, we protect the ocean. Check out the new Shark Conservation Fund and Florida International University infographic and study to learn more about the many roles sharks play as ecosystem architects: https://lnkd.in/dcaW-9Sw #SharkConservationFund #SDG14 #MPAs FIU College of Arts, Sciences & Education Michael Heithaus Yannis Papastamatiou Simon Dedman
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⚠️ The loss of the Java stingaree has been described as a “tipping point” for marine biodiversity. As marine biologists and taxonomists, we know there are countless more species out there that are at threat of extinction – and some of them haven’t even been discovered yet. By gaining a better understanding of what lies beneath, we can prioritise the preservation of marine biodiversity for generations. Read more ➡️ https://lnkd.in/dcND7bci #Extinction #MarineLife #Biodiversity #Hydrospatial
First marine fish declared extinct - Oceanographic
oceanographicmagazine.com
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AIP graduate Bonnie May '23 asks us to consider the three-spined stickleback fish when restoring ecosystems. In her article, which appears in the latest Current Conservation Magazine, she writes: "...watershed management ought to consider the genetic diversity and evolutionary patterns of resident species, such as the three-spined stickleback, before causing physical alterations ... or reintroducing native predators to an environment." Read Bonnie's article here: https://lnkd.in/gt394qFp
Stickleback (and forth): Evolution and ecosystem restoration | Current Conservation
https://www.currentconservation.org
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During a recent dive at the coral nursery, we encountered several lionfish (Pterois volitans). These striking yet invasive species, originally from the Indo-Pacific, were introduced to the Caribbean in the early 90s due to human activities. Since then, their populations have proliferated, posing a significant threat to marine ecosystems by preying on juvenile fish and outcompeting native species for resources. Lionfish are a prime example of how invasive alien species can disrupt biodiversity and ecological balance. Addressing this issue requires collaborative efforts in research, public awareness, and active removal programs. Can you spot all the lionfish in the video? And can anyone identify the other fish species present? Let's work together to protect our oceans and preserve marine biodiversity. #Lionfish #CoralReef #InvasiveSpecies #MarineBiodiversity #OceanConservation #MarineEcology #EnvironmentalAwareness #SustainableOceans"
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