Results 111 to 120 of about 3,230 (169)

Application of a Presumptive Standards Approach to Evaluate Environmental Flows in a Highly Regulated River Basin

River Research and Applications, EarlyView.
ABSTRACT The presumptive standards approach to environmental flows offers a method to develop interim guidelines for ecological and social‐cultural flow needs. The approach is based on deriving acceptable percent‐of‐flow limits based on naturalised flows (the absence of depletion or alteration of flow), and it can be an effective precursor to a full ...
Jennifer Lento, Wendy A. Monk, Fuad Yassin, Mustakim Ali, Hayley Carlson, Saman Razavi, Timothy D. Jardine   +6 more
wiley   +1 more source

An alpine plant shows no decrease in genetic diversity associated with rapid post-glacial range expansion. [PDF]

Am J Bot
Urquhart-Cronish M, Berg CS, Moxley D, Rahn OJ, Fishman L, Angert AL.   +5 more
europepmc   +1 more source

Semi‐automated seal detection on the Western Antarctic Peninsula: an unsupervised machine learning approach for detecting ice seals in aerial survey data

Remote Sensing in Ecology and Conservation, EarlyView.
This study presents a semi‐automated, rule‐based image analysis pipeline to detect ice seals in aerial surveys of the Western Antarctic Peninsula during an unusually low sea ice year. By using simple hierarchical clustering instead of deep learning, the method substantially reduced human annotation effort while achieving 82% recall, identifying 758 ...
Claire McGinnity, Connor C.G. Bamford, Nathan Fenney, Andrew Fleming, Jaume Forcada, Michael S. Tift, Luis A. Hückstädt, Daniel P. Costa, Peter T. Fretwell   +8 more
wiley   +1 more source

Meltwater and cold pump effects override climate control of grain size in polythermal glacier ice. [PDF]

Sci Rep
Li Y, Fu C.
europepmc   +1 more source

Historical remote sensing highlights long‐term persistence of Emperor Penguin (Aptenodytes forsteri) colonies

Remote Sensing in Ecology and Conservation, EarlyView.
Remote sensing can reveal population dynamics of Antarctic penguin colonies. In this study, we analyze emperor penguin (Aptenodytes forsteri) guano stains in remote sensing imagery and discover colony presence predating known records for 18 colonies across Antarctica.
Martynas Bielinis, Michelle LaRue, Benjamin M. Kraemer, Catalina Munteanu   +3 more
wiley   +1 more source

Observed positive feedback between surface ablation and crevasse formation drives glacier acceleration and potential surge. [PDF]

Nat Commun
Nanni U, Bouchayer C, Åkesson H, Lefeuvre PM, Mannerfelt ES, Köhler A, Gagliardini O, Kohler J, Schmidt LS, Hult J, Renard F, Schuler TV.   +11 more
europepmc   +1 more source

Identification of initial vegetation and habitat changes in small temperate fens using remote sensing

Remote Sensing in Ecology and Conservation, EarlyView.
Temperate fens with only incipient, subtle signs of deterioration can be reliably identified using Sentinel‐2 and aerial imagery, which sensitively detect early productivity‐related structural changes. Abstract Small temperate fens rank among the most endangered habitats in temperate Europe.
Lubomír Tichý, Patricia Singh, Petra Hájková, Anna Müllerová, Tomáš Peterka, Zuzana Plesková, Karel Prach, Adéla Široká, Kamila Vítovcová, Michal Hájek   +9 more
wiley   +1 more source

Mutual effects of ablation and ice temperature in a firn-free glacier: Observations from Aug 1st glacier on northeast Tibetan plateau. [PDF]

iScience
Liu G, Chen R, Han C, Liu J, Liu Z, Yang Y, Guo S, Wang X, Liu Y, Gao C.   +9 more
europepmc   +1 more source

Spatial heterogeneity in basin hydrology and hydropower potential: Implications for climate resilience and economic development in Nepal

River, EarlyView.
Abstract Nepal's vast hydropower potential is central to its long‐term economic development; however, it exhibits pronounced spatial heterogeneity and is increasingly vulnerable to climate‐induced risks. This study employs an integrated, Basin‐scale analytical framework to evaluate the hydrological productivity and economic viability of major river ...
Sanju Adhikary, Mahendra Aryal
wiley   +1 more source

Thirty years of glacier grounding line retreat in Antarctica. [PDF]

Proc Natl Acad Sci U S A
Rignot E, Scheuchl B, Barre JB, Brancato V, Charrier L, Chen H, Ciraci E, Dinh A, Herreid S, Jeong S, Li X, Mitchell T, Mohajerani Y, Shamsian S, Tolpekin V, Velicogna I, Wollersheim M.   +16 more
europepmc   +1 more source