Stream friendly coffee: evaluating the impact of coffee farming on high-elevation streams of the Tarrazú coffee region of Costa Rica

Crespo, Rebeca de Jesús; Douthat, Thomas; Pringle, Catherine M.

doi:10.1007/s10750-020-04221-1

Cited by 3 publications

(1 citation statement)

References 39 publications

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“…In tropical regions, less intense agricultural activities often replace riparian vegetation with other shrubs. Coffee plantations, for example, tend to leave no native vegetation at the stream edge, but coffee plants (and shade trees when present) shade stream channels and provide leaf litter for consumers [11].…”

Section: Introductionmentioning

confidence: 99%

Stream food webs in tropical mountains rely on allochthonous carbon regardless of land use

Ramírez,

Vázquez,

Sosa

et al. 2023

PLoS ONE

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The relative importance of allochthonous and autochthonous carbon (C) as sources of energy for tropical stream food webs remains an open question. Allochthonous C might be the main energy source for small and shaded forest streams, while autochthonous C is more likely to fuel food webs draining land uses with less dense vegetation. We studied food webs in cloud forest streams draining watersheds with forests, coffee plantations, and pastures. Our goal was to assess the effects of those land uses on the C source and structure of stream food webs. The study took place in tropical montane streams in La Antigua Watershed, in eastern Mexico. We selected three streams per land use and sampled biofilm and leaf litter as the main food resources, and macroinvertebrates and aquatic vertebrates from different trophic guilds. Samples were analyzed for δ13C and δ15N isotopes. Using a Bayesian mixing model, we estimated the proportional assimilation of autochthonous and allochthonous carbon by each guild. We found that consumers were mostly using allochthonous C in all streams, regardless of watershed land use. Our findings indicate that montane cloud forest streams are dominated by allochthony even in watersheds dominated by pastures. Abundant precipitation in this life zone might facilitate the movement of allochthonous C into streams. While food webs of streams from coffee plantations and pastures also rely on allochthonous resources, other impacts do result in important changes in stream functioning.

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Section: Introductionmentioning

confidence: 99%

Stream food webs in tropical mountains rely on allochthonous carbon regardless of land use

Ramírez,

Vázquez,

Sosa

et al. 2023

PLoS ONE

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Modeling multiple ecosystem services and beneficiaries of riparian reforestation in Costa Rica

Langhans¹,

Schmitt²,

Chaplin‐Kramer³

et al. 2022

Ecosystem Services

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The endophytobiome of wild Rubiaceae as a source of antagonistic fungi against the American Leaf Spot of coffee (Mycena citricolor)

Escudero-Leyva

Montero

Orozco-Ortiz³

et al. 2023

Journal of Applied Microbiology

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Aims The American leaf spot, caused by Mycena citricolor, is an important disease of coffee (Coffea arabica), mostly in Central America. Currently, there are limited pathogen control alternatives that are environmentally friendly and economically accessible. The use of fungi isolated from the plant endomycobiota in their native habitats is on the rise because studies show their great potential for biological control. To begin to generate a green alternative to control M. citricolor, the objectives of the present study were to (i) collect, identify, screen (in vitro and in planta), and select endophytic fungi from wild Rubiaceae collected in old-growth forests of Costa Rica; (ii) confirm endophytic colonization in coffee plantlets; (iii) evaluate the effects of the endophytes on plantlet development; and (iv) corroborate the antagonistic ability in planta. Methods and results Through in vitro and in planta antagonism assays, we found that out of the selected isolates (i.e., Daldinia eschscholzii GU11N, Nectria pseudotrichia GUHN1, Purpureocillium aff. lilacinum CT24, Sarocladium aff. kiliense CT25, Trichoderma rifaii CT5, T. aff. crassum G1C, T. aff. atroviride G7T, T. aff. strigosellum GU12, and Xylaria multiplex GU14T), Trichoderma spp. produced the highest growth inhibition percentages in vitro. Trichoderma isolates CT5 and G1C were then tested in planta using Coffea arabica cv. caturra plantlets. Endophytic colonization was verified, followed by in planta growth promotion and antagonism assays. Conclusions Results show that Trichoderma isolates CT5 and G1C have potential for plant growth promotion and antagonism against Mycena citricolor, reducing incidence and severity, and preventing plant mortality.

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Stream friendly coffee: evaluating the impact of coffee farming on high-elevation streams of the Tarrazú coffee region of Costa Rica

Cited by 3 publications

References 39 publications

Stream food webs in tropical mountains rely on allochthonous carbon regardless of land use

Stream food webs in tropical mountains rely on allochthonous carbon regardless of land use

Modeling multiple ecosystem services and beneficiaries of riparian reforestation in Costa Rica

The endophytobiome of wild Rubiaceae as a source of antagonistic fungi against the American Leaf Spot of coffee (Mycena citricolor)

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