Widespread dieback of riparian trees on a dammed ephemeral river and evidence of local mitigation by tributary flows.

Abstract:

:Ephemeral rivers act as linear oases in drylands providing key resources to people and wildlife. However, not much is known about these rivers' sensitivities to human activities. We investigated the landscape-level determinants of riparian tree dieback along the Swakop River, a dammed ephemeral river in Namibia, focusing on the native ana tree (Faidherbia albida) and the invasive mesquite (Prosopis spp.). We surveyed over 1,900 individual trees distributed across 24 sites along a 250 km stretch of the river. General linear mixed models were used to test five hypotheses relating to three anthropogenic threats: river flow disruption from damming, human settlement and invasive species. We found widespread dieback in both tree populations: 51% mortality in ana tree, with surviving trees exhibiting 18% canopy death (median); and 26% mortality in mesquite, with surviving trees exhibiting 10% canopy death. Dieback in the ana tree was most severe where trees grew on drier stretches of the river, where tributary flow was absent and where mesquite grew more abundantly. Dieback in the mesquite, a more drought-tolerant taxon, did not show any such patterns. Our findings suggest that dieback in the ana tree is primarily driven by changes in river flow resulting from upstream dam creation and that tributary flows provide a local buffer against this loss of main channel flow. The hypothesis that the invasive mesquite may contribute to ana tree dieback was also supported. Our findings suggest that large dams along the main channels of ephemeral rivers have the ability to cause widespread mortality in downstream riparian trees. To mitigate such impacts, management might focus on the maintenance of natural tributary flows to buffer local tree populations from the disruption to main channel flow.

journal_name

PeerJ

journal_title

PeerJ

authors

Douglas CM,Mulligan M,Harrison XA,Henschel JR,Pettorelli N,Cowlishaw G

doi

10.7717/peerj.2622

subject

Has Abstract

pub_date

2016-10-27 00:00:00

pages

e2622

issn

2167-8359

pii

2622

journal_volume

4

pub_type

杂志文章

相关文献

PeerJ文献大全
  • CFSP: a collaborative frequent sequence pattern discovery algorithm for nucleic acid sequence classification.

    abstract:Background:Conserved nucleic acid sequences play an essential role in transcriptional regulation. The motifs/templates derived from nucleic acid sequence datasets are usually used as biomarkers to predict biochemical properties such as protein binding sites or to identify specific non-coding RNAs. In many cases, templa...

    journal_title:PeerJ

    pub_type: 杂志文章

    doi:10.7717/peerj.8965

    authors: Peng H

    更新日期:2020-04-20 00:00:00

  • Genome-wide characterization and expression analysis of soybean trihelix gene family.

    abstract::Trihelix transcription factors play multiple roles in plant growth, development and various stress responses. In this study, we identified 71 trihelix family genes in the soybean genome. These trihelix genes were located at 19 out of 20 soybean chromosomes unevenly and were classified into six distinct subfamilies: GT...

    journal_title:PeerJ

    pub_type: 杂志文章

    doi:10.7717/peerj.8753

    authors: Liu W,Zhang Y,Li W,Lin Y,Wang C,Xu R,Zhang L

    更新日期:2020-03-13 00:00:00

  • The PGI enzyme system and fitness response to temperature as a measure of environmental tolerance in an invasive species.

    abstract::In the field of invasion ecology, the determination of a species' environmental tolerance, is a key parameter in the prediction of its potential distribution, particularly in the context of global warming. In poikilothermic species such as insects, temperature is often considered the most important abiotic factor that...

    journal_title:PeerJ

    pub_type: 杂志文章

    doi:10.7717/peerj.676

    authors: Lefort MC,Brown S,Boyer S,Worner S,Armstrong K

    更新日期:2014-11-25 00:00:00

  • Climate envelope predictions indicate an enlarged suitable wintering distribution for Great Bustards (Otis tarda dybowskii) in China for the 21st century.

    abstract::The rapidly changing climate makes humans realize that there is a critical need to incorporate climate change adaptation into conservation planning. Whether the wintering habitats of Great Bustards (Otis tarda dybowskii), a globally endangered migratory subspecies whose population is approximately 1,500-2,200 individu...

    journal_title:PeerJ

    pub_type: 杂志文章

    doi:10.7717/peerj.1630

    authors: Mi C,Falk H,Guo Y

    更新日期:2016-02-01 00:00:00

  • A late surviving Pliocene seal from high latitudes of the North Atlantic realm: the latest monachine seal on the southern margin of the North Sea.

    abstract:Background:The family of true seals, the Phocidae, is subdivided into two subfamilies: the southern Monachinae, and the northern Phocinae, following the subfamilies' current distribution: extant Monachinae are largely restricted to the (sub-)Antarctic and the eastern Pacific, with historical distributions of the monk s...

    journal_title:PeerJ

    pub_type: 杂志文章

    doi:10.7717/peerj.5734

    authors: Dewaele L,Lambert O,Louwye S

    更新日期:2018-10-09 00:00:00

  • The helical domain of the EcoR124I motor subunit participates in ATPase activity and dsDNA translocation.

    abstract::Type I restriction-modification enzymes are multisubunit, multifunctional molecular machines that recognize specific DNA target sequences, and their multisubunit organization underlies their multifunctionality. EcoR124I is the archetype of Type I restriction-modification family IC and is composed of three subunit type...

    journal_title:PeerJ

    pub_type: 杂志文章

    doi:10.7717/peerj.2887

    authors: Bialevich V,Sinha D,Shamayeva K,Guzanova A,Řeha D,Csefalvay E,Carey J,Weiserova M,Ettrich RH

    更新日期:2017-01-18 00:00:00

  • Maternal inheritance of F1 hybrid morphology and colony shape in the coral genus Acropora.

    abstract:Background:The coral genus Acropora contains more than 150 species with very high morphological diversity. This high diversity may have been caused by repeated hybridization via mass spawning. However, we have little information whether hybrids are formed in these corals. Identifying morphological differences between h...

    journal_title:PeerJ

    pub_type: 杂志文章

    doi:10.7717/peerj.6429

    authors: Fukami H,Iwao K,Kumagai NH,Morita M,Isomura N

    更新日期:2019-02-19 00:00:00

  • Role of salicylic acid in regulating ethylene and physiological characteristics for alleviating salinity stress on germination, growth and yield of sweet pepper.

    abstract:Background:During a preliminary study, effects of 0, 20, 40, and 60 mM NaCl salinity were assessed on germination rate in relation to electrolyte leakage (EL) in sweet pepper. Results explored significant rises in ethylene evolution from seeds having more EL. It was, therefore, hypothesized that excessive ethylene bios...

    journal_title:PeerJ

    pub_type: 杂志文章

    doi:10.7717/peerj.8475

    authors: Ahmed W,Imran M,Yaseen M,Haq TU,Jamshaid MU,Rukh S,Ikram RM,Ali M,Ali A,Maqbool M,Arif M,Khan MA

    更新日期:2020-03-27 00:00:00

  • Long-term atmospheric deposition of nitrogen, phosphorus and sulfate in a large oligotrophic lake.

    abstract::We documented significantly increasing trends in atmospheric loading of ammonium (NH4) and nitrate/nitrite (NO2/3) and decreasing trends in total phosphorus (P) and sulfate (SO4) to Flathead Lake, Montana, from 1985 to 2004. Atmospheric loading of NO2/3 and NH4 increased by 48 and 198% and total P and SO4 decreased by...

    journal_title:PeerJ

    pub_type: 杂志文章

    doi:10.7717/peerj.841

    authors: Ellis BK,Craft JA,Stanford JA

    更新日期:2015-03-19 00:00:00

  • Expanding walls and shrinking beaches: loss of natural coastline in Okinawa Island, Japan.

    abstract::Okinawa is the largest and most populated island of the Ryukyu Archipelago in southern Japan and is renowned for its natural resources and beauty. Similar as to what has been happening in the rest of the country, Okinawa Island has been affected by an increasing amount of development and construction work. The trend h...

    journal_title:PeerJ

    pub_type: 杂志文章

    doi:10.7717/peerj.7520

    authors: Masucci GD,Reimer JD

    更新日期:2019-09-06 00:00:00

  • According, against, and above dietary norms: a key to understanding the relationship between personality style and taste preferences.

    abstract:Background:Understanding individual food preferences is critical for creating tailored strategies that promote healthy individual eating behaviors. Individual sensory liking appears to be an essential determinant of dietary intake. Taste preferences influence satisfaction and satiety, and may consequently influence wei...

    journal_title:PeerJ

    pub_type: 杂志文章

    doi:10.7717/peerj.8198

    authors: Petre LM,Vatasescu BN

    更新日期:2019-12-06 00:00:00

  • Structure and expression analysis of seven salt-related ERF genes of Populus.

    abstract::Ethylene response factors (ERFs) are plant-specific transcription factors (TFs) that play important roles in plant growth and stress defense and have received a great amount of attention in recent years. In this study, seven ERF genes related to abiotic stress tolerance and response were identified in plants of the Po...

    journal_title:PeerJ

    pub_type: 杂志文章

    doi:10.7717/peerj.10206

    authors: Huang J,Wang S,Wang X,Fan Y,Han Y

    更新日期:2020-10-20 00:00:00

  • Repeated hands-and-knees positioning during labour: a randomized pilot study.

    abstract::Background. Caesarean birth rates in North America continue to rise, in the absence of benefit for mothers and babies. One reason may be that hospitalized labouring women spend most of their labours in recumbent or semi-recumbent positions. Although hands-and-knees position has theoretical advantages, efforts to encou...

    journal_title:PeerJ

    pub_type: 杂志文章

    doi:10.7717/peerj.25

    authors: Hodnett ED,Stremler R,Halpern SH,Weston J,Windrim R

    更新日期:2013-02-12 00:00:00

  • Increased root hair density by loss of WRKY6 in Arabidopsis thaliana.

    abstract::Root hairs are unicellular elongations of certain rhizodermal cells that improve the uptake of sparingly soluble and immobile soil nutrients. Among different Arabidopsis thaliana genotypes, root hair density, length and the local acclimation to low inorganic phosphate (Pi) differs considerably, when analyzed on split ...

    journal_title:PeerJ

    pub_type: 杂志文章

    doi:10.7717/peerj.2891

    authors: Stetter MG,Benz M,Ludewig U

    更新日期:2017-01-24 00:00:00

  • Population genomics reveals a mismatch between management and biological units in green abalone (Haliotis fulgens).

    abstract::Effective fishery management strategies should be based on stock delimitation and knowledge of the spatial scale at which species are distributed. However, a mismatch often occurs between biological and management units of fishery resources. The green abalone (Haliotis fulgens) supports an important artisanal fishery ...

    journal_title:PeerJ

    pub_type: 杂志文章

    doi:10.7717/peerj.9722

    authors: Mejía-Ruíz P,Perez-Enriquez R,Mares-Mayagoitia JA,Valenzuela-Quiñonez F

    更新日期:2020-08-19 00:00:00

  • Predictions of potential geographical distribution and quality of Schisandra sphenanthera under climate change.

    abstract::Climate change will significantly affect plant distribution as well as the quality of medicinal plants. Although numerous studies have analyzed the effect of climate change on future habitats of plants through species distribution models (SDMs), few of them have incorporated the change of effective content of medicina...

    journal_title:PeerJ

    pub_type: 杂志文章

    doi:10.7717/peerj.2554

    authors: Guo Y,Wei H,Lu C,Gao B,Gu W

    更新日期:2016-10-20 00:00:00

  • Diet, exercise and mental-wellbeing of healthcare professionals (doctors, dentists and nurses) in Pakistan.

    abstract::Background. "Health is wealth" is a time tested adage. Health becomes more relevant when it comes to professionals whose job is to provide people with services that maintain an optimum state of mental, physical and social well-being. Healthcare professionals (HCP) differ from general population in regards to the natur...

    journal_title:PeerJ

    pub_type: 杂志文章

    doi:10.7717/peerj.1250

    authors: Ahmad W,Taggart F,Shafique MS,Muzafar Y,Abidi S,Ghani N,Malik Z,Zahid T,Waqas A,Ghaffar N

    更新日期:2015-09-17 00:00:00

  • Agrichemicals and antibiotics in combination increase antibiotic resistance evolution.

    abstract::Antibiotic resistance in our pathogens is medicine's climate change: caused by human activity, and resulting in more extreme outcomes. Resistance emerges in microbial populations when antibiotics act on phenotypic variance within the population. This can arise from either genotypic diversity (resulting from a mutation...

    journal_title:PeerJ

    pub_type: 杂志文章

    doi:10.7717/peerj.5801

    authors: Kurenbach B,Hill AM,Godsoe W,van Hamelsveld S,Heinemann JA

    更新日期:2018-10-12 00:00:00

  • A phylogenetic taxonomy of the Cyrtodactylus peguensis group (Reptilia: Squamata: Gekkonidae) with descriptions of two new species from Myanmar.

    abstract::A phylogenetic taxonomy of species in the Cyrtodactylus peguensis group from the Ayeyarwady Basin of Myanmar is constructed based on color pattern, morphology, and molecular systematic analyses using the mitochondrial gene NADH dehydrogenase subunit 2. Newly collected samples from the type locality of C. peguensis and...

    journal_title:PeerJ

    pub_type: 杂志文章

    doi:10.7717/peerj.5575

    authors: Grismer LL,Wood PL Jr,Quah ESH,Murdoch ML,Grismer MS,Herr MW,Espinoza RE,Brown RM,Lin A

    更新日期:2018-09-19 00:00:00

  • Response of marine copepods to a changing tropical environment: winners, losers and implications.

    abstract::Background. Climate change concurrent with anthropogenic disturbances can initiate serial changes that reverberate up the food chain with repercussions for fisheries. To date, there is no information available concerning the combined effects of global warming and human impacts on tropical marine food webs. While tempe...

    journal_title:PeerJ

    pub_type: 杂志文章

    doi:10.7717/peerj.2052

    authors: Chew LL,Chong VC

    更新日期:2016-05-24 00:00:00

  • Genome analysis of quorum sensing Cedecea neteri SSMD04 leads to identification of its novel signaling synthase (cneI), cognate receptor (cneR) and an orphan receptor.

    abstract::Cedecea neteri is a very rare human pathogen. We have isolated a strain of C. neteri SSMD04 from pickled mackerel sashimi identified using molecular and phenotypics approaches. Using the biosensor Chromobacterium violaceum CV026, we have demonstrated the presence of short chain N-acyl-homoserine lactone (AHL) type quo...

    journal_title:PeerJ

    pub_type: 杂志文章

    doi:10.7717/peerj.1216

    authors: Tan KH,Tan JY,Yin WF,Chan KG

    更新日期:2015-09-01 00:00:00

  • Maternal alcohol consumption during pregnancy and child's cognitive performance at 6-8 years of age in rural Burkina Faso: an observational study.

    abstract:BACKGROUND:In Burkina Faso, it is not uncommon for mothers to drink alcohol, even during pregnancy. We aimed to study the association between maternal alcohol consumption during pregnancy and the child's cognitive performance using the Kaufman Assessment Battery for Children, 2nd edition (KABC-II) and the Children's Ca...

    journal_title:PeerJ

    pub_type: 杂志文章

    doi:10.7717/peerj.3507

    authors: Sanou AS,Diallo AH,Holding P,Nankabirwa V,Engebretsen IMS,Ndeezi G,Tumwine JK,Meda N,Tylleskar T,Kashala-Abotnes E

    更新日期:2017-06-30 00:00:00

  • Influences of heel height on human postural stability and functional mobility between inexperienced and experienced high heel shoe wearers.

    abstract:Background:High heel shoes (HHS) can affect human postural control because elevated heel height (HH) may result in plantar flexed foot and limit ankle joint range of motion during walking. Effects of HH and HHS wearing experience on postural stability during self-initiated and externally triggered perturbations are les...

    journal_title:PeerJ

    pub_type: 杂志文章

    doi:10.7717/peerj.10239

    authors: Chen Y,Li JX,Wang L

    更新日期:2020-10-28 00:00:00

  • An integrated pipeline for next generation sequencing and annotation of the complete mitochondrial genome of the giant intestinal fluke, Fasciolopsis buski (Lankester, 1857) Looss, 1899.

    abstract::Helminths include both parasitic nematodes (roundworms) and platyhelminths (trematode and cestode flatworms) that are abundant, and are of clinical importance. The genetic characterization of parasitic flatworms using advanced molecular tools is central to the diagnosis and control of infections. Although the nuclear ...

    journal_title:PeerJ

    pub_type: 杂志文章

    doi:10.7717/peerj.207

    authors: Biswal DK,Ghatani S,Shylla JA,Sahu R,Mullapudi N,Bhattacharya A,Tandon V

    更新日期:2013-11-12 00:00:00

  • Importance of considering interoceptive abilities in alexithymia assessment.

    abstract:Background:Recent studies have shown that people with high alexithymia scores have decreased interoceptive abilities, which can be associated with psychological and physical disorders. Early assessments of the alexithymia trait included the evaluation of these abilities through the dimension measuring the difficulty in...

    journal_title:PeerJ

    pub_type: 杂志文章

    doi:10.7717/peerj.7615

    authors: Fournier A,Luminet O,Dambrun M,Dutheil F,Pellissier S,Mondillon L

    更新日期:2019-11-20 00:00:00

  • Students distracted by electronic devices perform at the same level as those who are focused on the lecture.

    abstract::Background. Little is known about the characteristics of internet distractions that students may engage in during lecture. The objective of this pilot study is to identify some of the internet-based distractions students engage in during in-person lectures. The findings will help identify what activities most commonly...

    journal_title:PeerJ

    pub_type: 杂志文章

    doi:10.7717/peerj.572

    authors: Nalliah RP,Allareddy V

    更新日期:2014-09-16 00:00:00

  • Different environmental gradients affect different measures of snake β-diversity in the Amazon rainforests.

    abstract::Mechanisms generating and maintaining biodiversity at regional scales may be evaluated by quantifying β-diversity along environmental gradients. Differences in assemblages result in biotic complementarities and redundancies among sites, which may be quantified through multi-dimensional approaches incorporating taxonom...

    journal_title:PeerJ

    pub_type: 杂志文章

    doi:10.7717/peerj.5628

    authors: de Fraga R,Ferrão M,Stow AJ,Magnusson WE,Lima AP

    更新日期:2018-09-24 00:00:00

  • Spectral characteristics of the mutant form GGBP/H152C of D-glucose/D-galactose-binding protein labeled with fluorescent dye BADAN: influence of external factors.

    abstract::The mutant form GGBP/H152C of the D-glucose/D-galactose-binding protein with the solvatochromic dye BADAN linked to cysteine residue Cys 152 can be used as a potential base for a sensitive element of glucose biosensor system. We investigated the influence of various external factors on the physical-chemical properties...

    journal_title:PeerJ

    pub_type: 杂志文章

    doi:10.7717/peerj.275

    authors: Fonin AV,Stepanenko OV,Povarova OI,Volova CA,Philippova EM,Bublikov GS,Kuznetsova IM,Demchenko AP,Turoverov KK

    更新日期:2014-03-18 00:00:00

  • Serum lipid level is not associated with symptomatic intracerebral hemorrhage after intravenous thrombolysis for acute ischemic stroke.

    abstract:Background:This study assessed whether serum lipid levels are associated with the risk of symptomatic intracerebral hemorrhage (sICH) and functional outcomes in patients with acute ischemic stroke after receiving intravenous thrombolysis. Methods:We retrospectively analyzed consecutive ischemic stroke patients who wer...

    journal_title:PeerJ

    pub_type: 杂志文章

    doi:10.7717/peerj.6021

    authors: Lin TC,Lin YK,Chen CI,Chan L,Chi NF,Yuan RY,Sheu JJ,Wei CR,Tsai JP,Yeh TH

    更新日期:2018-11-23 00:00:00

  • Estimating food resource availability in arid environments with Sentinel 2 satellite imagery.

    abstract:Background:In arid environments, plant primary productivity is generally low and highly variable both spatially and temporally. Resources are not evenly distributed in space and time (e.g., soil nutrients, water), and depend on global (El Niño/ Southern Oscillation) and local climate parameters. The launch of the Senti...

    journal_title:PeerJ

    pub_type: 杂志文章

    doi:10.7717/peerj.9209

    authors: Funghi C,Heim RHJ,Schuett W,Griffith SC,Oldeland J

    更新日期:2020-05-26 00:00:00