Ecology

Eco-evolutionary feedback can stabilize diverse predator-prey communities

1. Stephen Martis

• Curated by eLife

  eLife assessment

  This useful theoretical and numerical study shows that evolution can stabilize predator and prey populations in a generalized Lotka-Volterra framework with high variance species-species interactions. It demonstrates an example of evolutionary bet hedging, rescuing species at risk of extinction due to destabilizing predator-prey interactions. The methodology is solid, but some modeling choices are quite specific, limiting direct applicability to concrete systems. The study should be useful to the community working on theoretical ecology and evolution, and the ecology-evolution coupling should resonate with a broader audience.

Reviewed by eLife

High genetic diversity in the pelagic deep-sea fauna of the Atacama Trench revealed by environmental DNA

1. Salvador Ramírez-Flandes
2. Carolina E. González
3. Montserrat Aldunate
4. Julie Poulain
5. Patrick Wincker
6. Ronnie N. Glud
7. Rubén Escribano
8. Sophie Arnaud Haond
9. Osvaldo Ulloa

• Curated by eLife

  eLife assessment

  This manuscript from Ramírez-Flandes will be of interest to marine biologists, deep ocean ecologists, conservation biologists, and biogeographers. At times, the comparison of merely a pair of samples or sampling locales can substantially widen our view of biological and ecological systems and processes. In the case of this study, the pattern of metazoan diversity from eDNA samples from across the water columns in comparable series from two deep trench systems (to below 8000 m) is markedly different, including evidence of substantial biological diversity deep in the Atacama Trench (to a much greater extent than observed in the Kermadec Trench), contradicting existing paradigms about biodiversity potential in abyssal-hadal regions.

Reviewed by eLife

Host-microbiome metabolism of a plant toxin in bees

1. Erick VS Motta
2. Alejandra Gage
3. Thomas E Smith
4. Kristin J Blake
5. Waldan K Kwong
6. Ian M Riddington
7. Nancy Moran

• Curated by eLife

  eLife assessment

  The manuscript makes an important contribution to understanding the roles of the bee host and microbiome in degrading amygdalin, a dietary secondary metabolite. Several bacterial strains and their enzymes responsible for the deglycosylation of amygdalin are identified. Conclusions are reached convincingly through a comprehensive combination of in vitro and in vivo experiments including gene-expression analysis, proteomics, HPLC-MS, and the use of recombinant E. coli to test enzyme function. As the consequences of microbial-derived amygdalin metabolisation on host health remain uncertain from the experiments conducted, the manuscript could be improved through a clearer discussion of future work needed and in parts more careful wording to not prematurely suggest benefits to the host.

Reviewed by eLife

Message in a Bottle—Metabarcoding enables biodiversity comparisons across ecoregions

1. D Steinke
2. S L deWaard
3. J E Sones
4. N V Ivanova
5. S W J Prosser
6. K Perez
7. T W A Braukmann
8. M Milton
9. E V Zakharov
10. J R deWaard
11. S Ratnasingham
12. P D N Hebert

Reviewed by GigaScience

Novel pathogen introduction triggers rapid evolution in animal social movement strategies

1. Pratik Rajan Gupte
2. Gregory F Albery
3. Jakob Gismann
4. Amy Sweeny
5. Franz J Weissing

• Curated by eLife

  eLife assessment

  The authors present a rich investigation of the evolution of social-movement rules in animal societies under pathogen pressure. The study should be of interest to a broad readership.

Reviewed by eLife

Environmental DNA from archived leaves reveals widespread temporal turnover and biotic homogenization in forest arthropod communities

1. Henrik Krehenwinkel
2. Sven Weber
3. Rieke Broekmann
4. Anja Melcher
5. Julian Hans
6. Rüdiger Wolf
7. Axel Hochkirch
8. Susan Rachel Kennedy
9. Jan Koschorreck
10. Sven Künzel
11. Christoph Müller
12. Rebecca Retzlaff
13. Diana Teubner
14. Sonja Schanzer
15. Roland Klein
16. Martin Paulus
17. Thomas Udelhoven
18. Michael Veith

• Curated by eLife

  eLife assessment

  We admired the study by Krehenwinkel and colleagues for its novelty, depth, and ecological breadth, but have questions regarding the laboratory, bioinformatic and statistical methodologies that require clarification. It is likely to make a substantial impact in the field of plant-based arthropod metabarcoding, revealing ecological insights that can be derived from existing bio-banked material. The work, which creatively exploits herbarium material to track arthropod communities, will be interesting to a general audience in addition to ecologists, foresters, phytopathologists, and industry.

Reviewed by eLife

Latent functional diversity may accelerate microbial community responses to temperature fluctuations

1. Thomas P Smith
2. Shorok Mombrikotb
3. Emma Ransome
4. Dimitrios - Georgios Kontopoulos
5. Samraat Pawar
6. Thomas Bell

• Curated by eLife

  eLife Assessment:

  This manuscript will be of interest to microbial ecologists and biogeochemists working on soil carbon cycling and responses to climate warming. This study uses an elegant experiment to show that standing variation, both phylogenetic and phenotypic, enables microbial community adaptation to higher temperatures. The authors' conclusions are supported by the data, and this work lays a foundation for future experimental and modeling studies.

  (This preprint has been reviewed by eLife. We include the public reviews from the reviewers here; the authors also receive private feedback with suggested changes to the manuscript. The reviewers remained anonymous to the authors.)

Reviewed by eLife

Ocean acidification increases susceptibility to sub-zero air temperatures in ecosystem engineers and limits poleward range shifts

1. Jakob Thyrring
2. Colin D Macleod
3. Katie E Marshall
4. Jessica Kennedy
5. Réjean Tremblay
6. Christopher DG Harley

• Curated by eLife

  Evaluation Summary:

  This paper is of broad interest to biologists and climate modelers that study the impact of environmental stress (especially multiple stressors) on marine life. The authors show that exposure to low pH (ocean acidification) decreases the ability of two mussel species to survive freezing stress. The authors measure multiple biochemical parameters to try and identify the mechanisms underlying the change in freeze tolerance, but future work will be needed to resolve the underlying mechanism in detail.

  (This preprint has been reviewed by eLife. We include the public reviews from the reviewers here; the authors also receive private feedback with suggested changes to the manuscript. The reviewers remained anonymous to the authors.)

Reviewed by eLife

Efficient decision-makers evaluate relative reward per effort

1. Jan Kubanek

• Curated by eLife

  Evaluation Summary:

  The paper describes an interesting, but very abstract extension of normative choice theories. By linking economic and foraging theory, the paper would potentially be of interest to a broad audience in behavioral economics and neuroscience. However, the results in their current form have several important limitations: the lack of a significant validation, such as an account for well-known behavioral or neural effects that would not be explained by alternative theories, a quantitative performance comparison between the proposed EDM and other models in realistic behavioral situations, and a specific link between the actual processes and limitations of real brains and the EDM.

  (This preprint has been reviewed by eLife. We include the public reviews from the reviewers here; the authors also receive private feedback with suggested changes to the manuscript. Reviewer #2 agreed to share their name with the authors.)

Reviewed by eLife

Wide-ranging consequences of priority effects governed by an overarching factor

1. Callie R Chappell
2. Manpreet K Dhami
3. Mark C Bitter
4. Lucas Czech
5. Sur Herrera Paredes
6. Fatoumata Binta Barrie
7. Yadira Calderón
8. Katherine Eritano
9. Lexi-Ann Golden
10. Daria Hekmat-Scafe
11. Veronica Hsu
12. Clara Kieschnick
13. Shyamala Malladi
14. Nicole Rush
15. Tadashi Fukami

• Curated by eLife

  Evaluation Summary:

  This manuscript identifies pH as a common factor that underlies eco-evolutionary dynamics related to priority effects, which play an important role in community assembly. Using multiple lines of evidence, the data support the overall conclusions of the manuscript that pH-mediated priority effects in the nectar microbiome are the drivers of alternative community states. This manuscript will be of broad interest to readers in ecology and evolutionary biology.

  (This preprint has been reviewed by eLife. We include the public reviews from the reviewers here; the authors also receive private feedback with suggested changes to the manuscript. Reviewer #2 agreed to share their name with the authors.)

Reviewed by eLife