Multi-scale temporal variation of methane flux and its controls in a subtropical tidal salt marsh in eastern China

2018 ◽  
Vol 137 (1-2) ◽  
pp. 163-179 ◽  
Author(s):  
Hong Li ◽  
Shengqi Dai ◽  
Zutao Ouyang ◽  
Xiao Xie ◽  
Haiqiang Guo ◽  
...  
Keyword(s):  
Salt Marsh ◽  
Temporal Variation ◽  
Eastern China ◽  
Methane Flux ◽  
Multi Scale ◽  
Tidal Salt Marsh

scholarly journals Multi-scale temporal variation in bird-window collisions in the central United States

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Corey S. Riding ◽  
Timothy J. O’Connell ◽  
Scott R. Loss
Keyword(s):  
Temporal Variation ◽  
Early Morning ◽  
Quantitative Information ◽  
Similar Amount ◽  
Multi Scale ◽  
Central United States ◽  
Monthly Total ◽  
Residency Status ◽  
Bird Mortality ◽  
Avian Populations

AbstractExpansion of urbanization and infrastructure associated with human activities has numerous impacts on wildlife including causing wildlife-structure collisions. Collisions with building windows represent a top bird mortality source, but a lack of research into timing of these collisions hampers efforts to predict them and mitigate effects on avian populations. In Stillwater, Oklahoma, USA, we investigated patterns of bird-window collisions at multiple temporal scales, from within-day to monthly and seasonal variation. We found that collisions peaked during overnight and early morning hours, a pattern that was consistent across seasons. Further, temporal variation in fatal collisions was explained by an interaction between season and avian residency status. This interaction illustrated the expected pattern that more migrant individuals than residents collided in fall, but we also documented unexpected patterns. For example, the highest monthly total of collisions occurred in spring migration during May. We also found similarly high numbers of resident and migrant collisions in spring, and a roughly similar amount of migrant mortality in spring and fall migration. These findings, which provide unprecedented quantitative information regarding temporal variation in bird-window collisions, have important implications for understanding mechanisms by which birds collide and improving timing of measures to reduce this major bird mortality source.

A foraminiferal proxy record of 20th century sea-level rise in the Manukau Harbour, New Zealand

2012 ◽  
Vol 63 (4) ◽  
pp. 370 ◽  
Author(s):  
Hugh R. Grenfell ◽  
Bruce W. Hayward ◽  
Ritsuo Nomura ◽  
Ashwaq T. Sabaa
Keyword(s):  
New Zealand ◽  
Salt Marsh ◽  
Sea Level Rise ◽  
Sea Level ◽  
20Th Century ◽  
Tide Gauge ◽  
Sediment Accumulation ◽  
Proxy Record ◽  
Tide Gauge Record ◽  
Tidal Salt Marsh

The present study aimed to extract a sea-level history from northern New Zealand salt-marsh sediments using a foraminiferal proxy, and to extend beyond the longest nearby tide-gauge record. Transects through high-tidal salt marsh at Puhinui, Manukau Harbour, Auckland, New Zealand, indicate a zonation of dominant foraminifera in the following order (with increasing elevation): Ammonia spp.–Elphidium excavatum, Ammotium fragile, Miliammina fusca, Haplophragmoides wilberti–Trochammina inflata, Trochamminita salsa–Miliammina obliqua. The transect sample faunas are used as a training set to generate a transfer function for estimating past tidal elevations in two short cores nearby. Heavy metal, 210Pb and 137Cs isotope analyses provide age models that indicate 35 cm of sediment accumulation since ~1890 AD. The first proxy-based 20th century rates of sea-level rise from New Zealand’s North Island at 0.28 ± 0.05 cm year–1 and 0.33 ± 0.07 cm year–1 are estimated. These are faster than the nearby Auckland tide gauge for the same interval (0.17 ± 0.1 cm year–1), but comparable to a similar proxy record from southern New Zealand (0.28 ± 0.05 cm year–1) and to satellite-based observations of global sea-level rise since 1993 (0.31 ± 0.07 cm year–1).

PM10 temporal variation and multi-scale contributions of sources and meteorology in Sfax, Tunisia

2020 ◽  
Vol 13 (5) ◽  
pp. 617-628
Author(s):  
Rym Dammak ◽  
Iness Chabbi ◽  
Moez Bahloul ◽  
Chafai Azri
Keyword(s):  
Temporal Variation ◽  
Multi Scale

Effects of salinity and inundation on carbon storage of halophytes in the tidal salt marsh of the Yangtze River Estuary, China

2018 ◽  
Vol 38 (9) ◽  
Author(s):  
薛莲 XUE Lian ◽  
李秀珍 LI Xiuzhen ◽  
闫中正 YAN Zhongzheng ◽  
张骞 ZHANG Qian ◽  
丁文慧 DING Wenhui ◽  
...  
Keyword(s):  
Salt Marsh ◽  
Carbon Storage ◽  
Yangtze River ◽  
River Estuary ◽  
Yangtze River Estuary ◽  
The Yangtze River ◽  
Tidal Salt Marsh ◽  
The Yangtze River Estuary
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