Eutrophication control of large shallow lakes in China

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 881, P. 163494 - 163494

Published: April 15, 2023

Language: Английский

---

The role of phosphorus and nitrogen on chlorophyll a: Evidence from hundreds of lakes

Water Research, Journal Year: 2020, Volume and Issue: 185, P. 116236 - 116236

Published: July 27, 2020

Language: Английский

---

Acoustic telemetry and network analysis reveal the space use of multiple reef predators and enhance marine protected area design

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2016, Volume and Issue: 283(1834), P. 20160717 - 20160717

Published: July 13, 2016

Marine protected areas (MPAs) are commonly employed to protect ecosystems from threats like overfishing. Ideally, MPA design should incorporate movement data multiple target species ensure sufficient habitat is protected. We used long-term acoustic telemetry and network analysis determine the fine-scale space use of five shark one turtle at a remote atoll in Seychelles, Indian Ocean, evaluate efficacy proposed MPA. Results revealed strong, species-specific both sharks turtles, with corresponding variation use. Defining MPA's boundary edge reef flat low tide instead beach high (the current best Seychelles) significantly increased coverage predator movements by an average 34%. Informed these results, larger was adopted Seychelles government, demonstrating how can improve spatial conservation affecting policy directly.

Language: Английский

---

Analysis of environmental drivers influencing interspecific variations and associations among bloom-forming cyanobacteria in large, shallow eutrophic lakes

Harmful Algae, Journal Year: 2019, Volume and Issue: 84, P. 84 - 94

Published: March 19, 2019

Language: Английский

---

Effects of bird-feeding activities on the health of wild birds

Conservation Physiology, Journal Year: 2015, Volume and Issue: 3(1), P. cov058 - cov058

Published: Jan. 1, 2015

Among the most popular reasons that people feed wild birds is they want to help birds. The extent which supplemental food helps birds, however, not well established. From spring 2011 2014, we examined how feeding of influences health individual at forested sites in central Illinois, USA. Specifically, compared three where provided with for no was available and monitored changes In addition, determined whether any bird had occurred after feeders been removed from 10 months before. Generally, improved feeding, including increased antioxidant levels, reduced stress (heterophil-to-lymphocyte ratio) more rapid feather growth. some species, also found body condition index scores innate immune defense. difference among present were removed, suggesting impact on indeed related feeding. Potential negative effects found, an increase infectious disease prevalence offered. Birds clear signs pathology showed deficits physiological metrics feeder typically condition. At peak disease, 8.3% all exhibited symptoms conjunctivitis, pox, dermal or cloacal disease. We both positive impacts that, general, access better Moreover, may be mitigated by hobbyists engaging safer bird-feeding practices.

Language: Английский

---

Impacts of no-tillage management on nitrate loss from corn, soybean and wheat cultivation: A meta-analysis

Scientific Reports, Journal Year: 2017, Volume and Issue: 7(1)

Published: Sept. 15, 2017

Abstract Although no-till (NT) has been promoted as an alternative land management practice to conventional tillage (CT), its impact on water quality, especially nitrate (NO 3 − ) loss remain controversial. We conducted a meta-analysis compare NO concentration and load in NT CT systems via two major transport pathways: runoff leaching. Rainfall variability, aridity, soil texture, duration, crop species, fertilizer type were used co-varying factors. In comparison CT, resulted overall increase of concentration, but similar load. contrast, leachate was greater under than although both practices, indicating that the effect largely determined by changes flux. Some deviations from these trends, however, recorded with different variables. NT, for example, generated lower (instead elevated) soybean fields (no N applied). These results suggest needs be complemented other practices (e.g., cover crops, reduced rate, split application) order improve retention quality benefits.

Language: Английский

---

Lake warming intensifies the seasonal pattern of internal nutrient cycling in the eutrophic lake and potential impacts on algal blooms

Water Research, Journal Year: 2020, Volume and Issue: 188, P. 116570 - 116570

Published: Oct. 25, 2020

Language: Английский

---

Chemicals used forin situimmobilization to reduce the internal phosphorus loading from lake sediments for eutrophication control

Critical Reviews in Environmental Science and Technology, Journal Year: 2016, Volume and Issue: 46(10), P. 947 - 997

Published: May 18, 2016

The in situ immobilization technique is a typical method of geoengineering lakes for eutrophication control. reduces internal phosphorus loading from sediments by dosing chemicals, which means that selecting appropriate chemicals are essential. Therefore, the authors present comprehensive review current available knowledge used technique. Chemicals classified into nine categories, and control effectiveness stability as well physicochemical ecological responses to reviewed. also address challenges practical application offers recommendations future research.

Language: Английский

---

Amphibian decline, pond loss and reduced population connectivity under agricultural intensification over a 38 year period

Biodiversity and Conservation, Journal Year: 2017, Volume and Issue: 26(6), P. 1411 - 1430

Published: Feb. 22, 2017

Habitat loss, together with less obvious land-use changes such as intensified farming practice, can have significant adverse impacts on biodiversity. An important factor in determining the ability of species to cope is their potential sustain a populations network by dispersal across landscape. quality and structure are particularly for surface-dwelling low abilities, amphibians. To assess this ecological function, ponds coastal typically rural area northern France were surveyed amphibians 1974, 1992 2011. These repeated surveys yielded different outcomes groups. Three rare persisted more or specialized habitat types. Two moderately common declined, but kept strongholds dunes associated marshes. Five broad niches remained equally widespread. The Northern crested newt declined markedly Midwife toad dramatically, did breeding habitats vegetated cattle drinking troughs. One species, Moor frog, may gone locally extinct. A model relative resistance amphibian was created landscape types, scale from 0 (low resistance) 1 (high resistance). This generated values 0.23 pasture, 0.72 arable 0.98 urban transport. As pasture study area, while urban/transport infrastructure increased, became difficult. However, paths proved difficult evaluate patchy like one surveyed, due paucity spatial signal. Pond loss tractable reason observed decline than intervening terrestrial matrix. In 2011, 22 newly had richness line pre-existing will counteracted dwindling metapopulation structure, indicating that creation/restoration play valuable role conservation. colonization new also prove informative gauging preceding decline.

Language: Английский

---

Multiscale perspectives of fire, climate and humans in western North America and the Jemez Mountains, USA

Philosophical Transactions of the Royal Society B Biological Sciences, Journal Year: 2016, Volume and Issue: 371(1696), P. 20150168 - 20150168

Published: May 24, 2016

Interannual climate variations have been important drivers of wildfire occurrence in ponderosa pine forests across western North America for at least 400 years, but finer scales mountain ranges and landscapes human land uses sometimes over-rode influences. We reconstruct analyse effects high population densities the Jemez Mountains, New Mexico from ca 1300 CE to Present. Prior 1680 Pueblo Revolt, reduced widespread fires while simultaneously adding more ignitions resulting many small-extent fires. During 18th 19th centuries, wet/dry oscillations their on fuels dynamics controlled fire occurrence. In late century, intensive livestock grazing disrupted continuity spread then active suppression maintained absence surface during most 20th century. The abundance is controlling variable regimes these semi-arid forests. Reduction owing reduction fuel emerges as a hallmark extensive impacts past regimes.This article part themed issue 'The interaction mankind'.

Language: Английский

---