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1. A method to avoid spatial overfitting in estimation of grassland above-ground biomass on the Tibetan Plateau

Author:
Yu, Hui; Wu, Yufeng; Niu, Liting; Chai, Yafan; Feng, Qisheng; Wang, Wei; Liang, Tiangang
Source:
Ecological indicators 2021 v.125 pp. 107450
ISSN:
1470-160X
Subject:
grasslands,   etc   ; aboveground biomass; models; China;     Show all 4 Subjects
Abstract:
... Accurate assessments of grassland above-ground biomass (AGB) are crucial for the sustainable utilization and protection of grassland resources and the eco-environment. In this study, a random forest (RF) model combined with the forward feature selection (FFS) and leave-location-out cross-validation (LLO-CV) methods was trained to predict the dry weight (DW) of grassland AGB based on multiple facto ...
DOI:
10.1016/j.ecolind.2021.107450

2. Intended and unintended environmental consequences of grassland rental in pastoral China

Author:
Su, Liufang; Tang, Jianjun; Qiu, Huanguang
Source:
Journal of environmental management 2021 v.285 pp. 112126
ISSN:
0301-4797
Subject:
grasslands,   etc   ; environmental management; pastoralism; surveys; China;     Show all 5 Subjects
Abstract:
... Among herders, market-oriented grassland rental has been prevalent in China following the implementation of the Household Contracted Responsibility System, which allocated formerly collectively-owned use rights to individual herders. However, empirical evidence on the effect of grassland rental on herder households' overgrazing behaviour is scant, despite the fact that it is one of the main determ ...
DOI:
10.1016/j.jenvman.2021.112126

3. Taxonomic and morphological diversity of the ground-dwelling ant fauna in Eastern Amazonian grasslands

Author:
Siqueira, Emely L.S.; Silva, Rogério R.
Source:
Acta oecologica 2021 v.110 pp. 103693
ISSN:
1146-609X
Subject:
grasslands,   etc   ; ecosystems; fauna; savannas; species richness; Amazonia;     Show all 6 Subjects
Abstract:
... Amazonian grassland ecosystems are poorly understood, highly threatened, and under-protected. This study combined taxonomic and trait-based diversity approaches to provide the first description of the diversity of the ground-dwelling ant fauna of grasslands in Eastern Amazonia. We surveyed two types of open vegetation habitats: campinarana (unique to Amazonia; five sites) and savanna (two sites). ...
DOI:
10.1016/j.actao.2020.103693

4. Grazing and the vanishing complexity of plant association networks in grasslands

Author:
Génin, Alexandre; Dutoit, Thierry; Danet, Alain; le Priol, Alice; Kéfi, Sonia
Source:
Oikos 2021 v.130 no.4 pp. 541-552
ISSN:
0030-1299
Subject:
grasslands,   etc   ; community structure; herbaceous plants; sheep; topology;     Show all 5 Subjects
Abstract:
... Interactions are key drivers of the functioning and fate of plant communities. A traditional way to measure them is to use pairwise experiments, but such experiments do not scale up to species‐rich communities. For those, using association networks based on spatial patterns may provide a more realistic approach. While this method has been successful in abiotically‐stressed environments (alpine and ...
DOI:
10.1111/oik.07850

5. Parasitism rate of Plebejus argyrognomon (Lepidoptera: Lycaenidae) under different levels of mowing management

Author:
Yeh, Yen‐hua; Deto, Hidenori; Miyashita, Tadashi
Source:
Entomological science 2021 v.24 no.1 pp. 32-34
ISSN:
1343-8786
Subject:
grasslands,   etc   ; Japan; Plebejus; butterflies; habitat conservation; parasitism;     Show all 6 Subjects
Abstract:
... Plebejus argyrognomon is an endangered grassland butterfly species in Japan. In this study we focused on the parasitism rate of tachinid flies under different mowing management to obtain knowledge of this possible top‐down effect that has been largely ignored. We established three mowing treatments differing in the intensity of mowing, as represented by vegetation height. The results showed that t ...
DOI:
10.1111/ens.12448

6. Action Recognition Using a Spatial-Temporal Network for Wild Felines

Author:
Feng, Liqi; Zhao, Yaqin; Sun, Yichao; Zhao, Wenxuan; Tang, Jiaxi
Source:
Animals 2021 v.11 no.2
ISSN:
2076-2615
Subject:
grasslands,   etc   ; cats; geometry; humans; neural networks;     Show all 5 Subjects
Abstract:
... Behavior analysis of wild felines has significance for the protection of a grassland ecological environment. Compared with human action recognition, fewer researchers have focused on feline behavior analysis. This paper proposes a novel two-stream architecture that incorporates spatial and temporal networks for wild feline action recognition. The spatial portion outlines the object region extracte ...
DOI:
10.3390/ani11020485

7. Lepus europaeus (Lagomorpha: Leporidae)

Author:
Bock, Anni
Source:
Mammalian species 2021 v.52 no.997 pp. 125-142
ISSN:
1545-1410
Subject:
grasslands,   etc   ; Lepus europaeus; sports; Asia; Europe;     Show all 5 Subjects
Abstract:
... Lepus europaeus Pallas, 1778, commonly called the European hare, is one of 32 species of Lepus. It is widely distributed in Europe and Asia where it was not native but introduced by humans for sport. L. europaeus does not burrow, nor hibernate, and gives birth to precocial young (leverets). It prefers open grassland, fields, agricultural farmland, and pastures with hedgerows and bushes. Declining ...
DOI:
10.1093/mspecies/seaa010

8. Species pool size alters species–area relationships during experimental community assembly

Author:
Catano, Christopher P.; Grman, Emily; Behrens, Eric; Brudvig, Lars A.
Source:
Ecology 2021 v.102 no.1 pp. e03231
ISSN:
0012-9658
Subject:
grasslands,   etc   ; biodiversity; ecological restoration; soil water; uncertainty;     Show all 5 Subjects
Abstract:
... The species pool concept has advanced our understanding for how biodiversity is coupled at local and regional scales. However, it remains unclear how species pool size, the number of species available to disperse to a site, influences community assembly across spatial scales. We provide one of the first studies that assesses diversity across scales after experimentally assembling grassland communi ...
DOI:
10.1002/ecy.3231

9. Trade-offs in ecological, productivity and livelihood dimensions inform sustainable grassland management: Case study from the Qinghai-Tibetan Plateau

Author:
Yang, Mingyue; Dong, Shikui; Dong, Quanming; Xu, Yudan; Zhi, Yangliu; Liu, Wenting; Zhao, Xinyue
Source:
Agriculture, ecosystems & environment 2021 v.313 pp. 107377
ISSN:
0167-8809
Subject:
alpine grasslands; grassland management,   etc   ; agriculture; case studies; environment; livelihood; livestock production; pastoralism; China;     Show all 9 Subjects
Abstract:
... Developing sustainable management practices for alpine grassland on the Qinghai-Tibetan Plateau is a key challenge related to the protection of regional ecological environments, the provision of husbandry production and the improvement of pastoralist welfare. This challenge requires researchers and policymakers to seek options that optimize benefits among multiple objectives in ecological, product ...
DOI:
10.1016/j.agee.2021.107377

10. Remote sensing inversion of grassland aboveground biomass based on high accuracy surface modeling

Author:
Zhou, Wei; Li, Haoran; Xie, Lijuan; Nie, Xuemin; Wang, Zong; Du, Zhengping; Yue, Tianxiang
Source:
Ecological indicators 2021 v.121 pp. 107215
ISSN:
1470-160X
Subject:
grassland restoration; grasslands,   etc   ; aboveground biomass; carbon sequestration; grasses; models; pastoralism; support vector machines; surveys; China;     Show all 10 Subjects
Abstract:
... Accurate and effective accounting of grassland aboveground biomass (AGB) is essential for grassland carbon storage accounting and pastoral agriculture sustainability. In this study, we combined AGB field survey data and remote sensing data to build a suitable model to estimate the grassland AGB in the Three-River Source Region (TRSR) of China. Three machine learning models were used to simulate th ...
DOI:
10.1016/j.ecolind.2020.107215

11. Sheep in Species-Rich Temperate Grassland: Combining Behavioral Observations with Vegetation Characterization

Author:
Hall, Stephen J.G.; Bunce, Robert G.H.; Arney, David R.; Vollmer, Elis
Source:
Animals 2020 v.10 no.9
ISSN:
2076-2615
Subject:
grasslands,   etc   ; ecophysiology; sheep; Estonia;     Show all 4 Subjects
Abstract:
... Foraging behavior of livestock in species-rich, less intensively managed grassland communities will require different methodologies from those appropriate in floristically simple environments. In this pilot study on sheep in species-rich grassland in northern Estonia, foraging behavior and the plant species of the immediate area grazed by the sheep were registered by continually-recording Go-Pro c ...
DOI:
10.3390/ani10091471

12. Upscaling evapotranspiration from the instantaneous to the daily time scale: Assessing six methods including an optimized coefficient based on worldwide eddy covariance flux network

Author:
Jiang, Lei; Zhang, Baozhong; Han, Songjun; Chen, He; Wei, Zheng
Source:
Journal of hydrology 2021 v.596 pp. 126135
ISSN:
0022-1694
Subject:
grasslands,   etc   ; ecosystems; eddy covariance; evapotranspiration; remote sensing; satellites; shrublands; wetlands;     Show all 8 Subjects
Abstract:
... Remote sensing plays an irreplaceable role in mapping evapotranspiration (ET) at the regional scale. Instantaneous ET can be derived by multiple ET models based on various remotely sensed data at the time of satellite overpass. Therefore, a reliable temporal upscaling method from instantaneous ET to daily ET is of great importance. In this study, six widely used upscaling methods for estimating da ...
DOI:
10.1016/j.jhydrol.2021.126135

13. Cutting height and interval effects on yield of palisadegrass cv. MG5 in temperate zone

Author:
Kaneko, Makoto; Nakamura, Yoshi‐nori; Kobayashi, Ryoji; Yamada, Akihisa
Source:
Grassland science 2021 v.67 no.2 pp. 177-181
ISSN:
1744-6961
Subject:
grasslands,   etc   ; Japan; Urochloa brizantha; dry matter accumulation; temperate zones;     Show all 5 Subjects
Abstract:
... In southwestern Japan located in the temperate zone, palisadegrass (Urochloa brizantha [Hochst. ex A. Rich.] R.D. Webster syn. Brachiaria brizantha [A. Rich.] Stapf) cv. MG5 does not head or overwinter. Under this condition, the responses of palisadegrass to cutting height and interval were examined in a field study for three consecutive years. Treatments were the factorial combinations of three c ...
DOI:
10.1111/grs.12297

14. Synergistic effects of long‐term herbivory and previous fire on fine‐scale heterogeneity of prescribed grassland burns

Author:
Werner, Chhaya M.; Kimuyu, Duncan; Veblen, Kari E.; Sensenig, Ryan L.; LaMalfa, Eric; Young, Truman P.
Source:
Ecology 2021 v.102 no.4 pp. e03270
ISSN:
0012-9658
Subject:
grasslands,   etc   ; biodiversity conservation; drought; ecosystems; herbivores; savannas; spatial variation; Kenya;     Show all 8 Subjects
Abstract:
... Grassland and savanna ecosystems, important for both livelihoods and biodiversity conservation, are strongly affected by ecosystem drivers such as herbivory, fire, and drought. Interactions among fire, herbivores and vegetation produce complex feedbacks in these ecosystems, but these have rarely been studied in the context of fuel continuity and resultant fire heterogeneity. We carried out 36 cont ...
DOI:
10.1002/ecy.3270

15. New record of the lace bug species Acalypta marginata (Wolff) (Hemiptera: Heteroptera: Tingidae) from Japan

Author:
Souma, Jun
Source:
Biodiversity data journal 2021 v.9 pp. e62868
ISSN:
1314-2828
Subject:
grasslands,   etc   ; Japan; Palearctic region; Tingidae; biodiversity; habitats; taxonomic keys;     Show all 7 Subjects
Abstract:
... The lace bug species Acalyptamarginata (Wolff, 1804) has, to date, been widely known to occur in the Palaearctic Region, but has not been recorded from Japan. Acalyptamarginata is recorded from Japan for the first time. Its habitat in Japan is the grassland of Hokkaido. A key to the species of Acalypta occurring in Japan is provided. ...
DOI:
10.3897/BDJ.9.e62868

16. Quantitatively distinguishing the impact of climate change and human activities on vegetation in mainland China with the improved residual method

Author:
Zhang, Yahai; Ye, Aizhong
Source:
GIScience & remote sensing 2021 v.58 no.2 pp. 235-260
ISSN:
1943-7226
Subject:
grasslands,   etc   ; climate change; equations; humans; planting; temperature; uncertainty; China;     Show all 8 Subjects
Abstract:
... In recent decades, vegetation has faced the dual challenges posed by climate change and human activities. Quantitatively distinguishing the influences of climate change and human activities on vegetation changes is key to developing adaptive ecological protection policies. This study examined changes in temperature and precipitation to determine if anthropogenic land use changes have affected vege ...
DOI:
10.1080/15481603.2021.1872244

17. Dew formation reduction in global warming experiments and the potential consequences

Author:
Feng, Tianjiao; Zhang, Lixu; Chen, Qian; Ma, Zhiyuan; Wang, Hao; Shangguan, Zijian; Wang, Lixin; He, Jin-Sheng
Source:
Journal of hydrology 2021 v.593 pp. 125819
ISSN:
0022-1694
Subject:
alpine grasslands,   etc   ; dew; ecosystems; hydrology; leaf wetness; plant height; China;     Show all 7 Subjects
Abstract:
... Dew, as an important contribution of non-rainfall water (NRW), plays a vital role in ecosystem processes in arid and semi-arid regions and is expected to be affected by climate warming. Infrared heater warming systems have been widely used to simulate climate warming effects on ecosystems. However, how this warming system affects dew formation has been long ignored and rarely addressed. In a typic ...
DOI:
10.1016/j.jhydrol.2020.125819

18. Effects of mowing regimes on above- and belowground biota in semi-arid grassland of northern China

Author:
Chen, Lingling; Baoyin, Taogetao; Minggagud, Hugjiltu
Source:
Journal of environmental management 2021 v.277 pp. 111441
ISSN:
0301-4797
Subject:
grasslands,   etc   ; ecosystems; environmental management; niches; soil bacteria; species richness; China;     Show all 7 Subjects
Abstract:
... Mowing is a widely used practice for haymaking in the semi-arid grassland of northern China. Yet, how it impacts above- and belowground biota and ultimately affects the grassland ecosystem is unclear. Here we address this question by investigating the effects of three mowing regimes (no mowing, mowing once per year, mowing twice every three years) on vegetation characteristics, soil properties, an ...
DOI:
10.1016/j.jenvman.2020.111441

19. Conservation of endangered and rare plants requires strategies additional to deer‐proof fencing for conservation of sub‐alpine plant diversity

Author:
Koyama, Asuka; Uchida, Kei; Ozeki, Masaaki; Iwasaki, Takaya; Nakahama, Naoyuki; Suka, Takeshi
Source:
Applied vegetation science 2021 v.24 no.1 pp. e12553
ISSN:
1402-2001
Subject:
grasslands,   etc   ; Japan; deer; rare species; species richness; surveys;     Show all 6 Subjects
Abstract:
... QUESTIONS: Deer‐proof fencing is an essential conservation tool to protect and recover plant species diversity in deer‐overbrowsed ecosystems, including species‐rich sub‐alpine grasslands. However, community‐level conservation tools (such as fencing) may be insufficient for single‐species conservation, particularly for non‐target endangered or rare species that are sparsely distributed. We examine ...
DOI:
10.1111/avsc.12553

20. Co‐occurrence history increases ecosystem stability and resilience in experimental plant communities

Author:
van Moorsel, Sofia J.; Hahl, Terhi; Petchey, Owen L.; Ebeling, Anne; Eisenhauer, Nico; Schmid, Bernhard; Wagg, Cameron
Source:
Ecology 2021 v.102 no.1 pp. e03205
ISSN:
0012-9658
Subject:
grasslands,   etc   ; biomass; ecological balance; ecosystems; evolution; soil; species richness;     Show all 7 Subjects
Abstract:
... Understanding factors that maintain ecosystem stability is critical in the face of environmental change. Experiments simulating species loss from grassland have shown that losing biodiversity decreases ecosystem stability. However, as the originally sown experimental communities with reduced biodiversity develop, plant evolutionary processes or the assembly of interacting soil organisms may allow ...
DOI:
10.1002/ecy.3205