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Philipp Emanuel Hirsch

Philipp Emanuel Hirsch
Man-Society-Environment / Research Centre for Sustainable Energy Water Supply · Department of Environmental Science

About

84
Publications
15,268
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1,371
Citations
Citations since 2017
32 Research Items
1136 Citations
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2017201820192020202120222023050100150200
2017201820192020202120222023050100150200

Publications

Publications (84)
Article
Full-text available
Anthropogenic structures can form novel ecosystem niches. Invasive species are often particularly successful in occupying these habitats and utilize them as beachheads for further spread. The invasive round goby (Neogobius melanostomus, Pallas 1814), an inherently bottom-dwelling fish, uses vertical harbor walls as habitat, enabling them to reach b...
Article
Full-text available
Migration barriers being selective for invasive species could protect pristine upstream areas. We designed and tested a prototype protective barrier in a vertical slot fish pass. Based on the individuals’ swimming responses to the barrier flow field, we assumed this barrier would block the ascension of the invasive round goby, but allow comparable...
Preprint
Full-text available
Aquatic invasive species (AIS) are a major threat to freshwater and marine ecosystems worldwide. Despite management efforts, human assisted dispersal continues to distribute AIS within and across waterbodies. An understudied translocation vector for AIS, especially for invasive fish, are the cooling systems of small watercraft motors. Here, we inve...
Article
Full-text available
• Human translocations of non‐native aquatic species are a global conservation challenge. Aquarists and anglers are two hobbyist groups whose practices are particularly likely to translocate non‐native aquatic species, especially fish. • This article aims to stipulate a change of perspective among these hobbyists, who – by acting simultaneously as...
Article
Full-text available
Efforts to restore river ecosystem connectivity focus predominantly on diadromous, economically important fish species, and less attention is given to nonmigratory, small-bodied, benthic fish species. Data on benthic fish swimming performance and behaviour in comparison with ecologically similar native species are especially relevant for the study...
Article
This study examines the impact of boldness on foraging competition of the highly invasive round goby Neogobius melanostomus Pallas 1815. Individual risk tolerance, or boldness, was measured as the time to resume movement after a simulated predation strike. Fish that resumed movement faster were categorized as “bold”, fish that took more time to res...
Article
Full-text available
The global energy system changes towards renewables-dominated and liberalized markets. This requires making novel trade-offs between the profitable development of hydropower and its environmental effects on the natural flow regime. Here, we used a pristine river as a model for how these future changes will affect the natural flow regime and identif...
Article
Full-text available
Modern ethohydraulics is the study of the behavioral responses of swimming fish to flow fields. However, the exact drag forces experienced by fish remain poorly studied; this information is required to obtain a better understanding of the behavioral responses of fish and their current resistance strategies. We measured near-ground frontal drag forc...
Article
• Conservation of riverine fish often aims to improve access to spawning grounds and restore longitudinal connectivity by removing migration barriers, and involves substantial investments. However, these investments also enable non‐native predators to invade upstream into spawning areas and potentially adversely affect the recruitment of threatened...
Article
Differences between individuals in behavioral type (i.e. animal personality) are ecologically and evolutionarily important because they can have significant effects on fitness components such as growth and predation risk. In the present study we ere used the invasive round goby (Neogobius melanostomus) from an established population in controlled e...
Preprint
Full-text available
1.Conservation of riverine fish typically aims at improving access to spawning grounds and the restoration of longitudinal connectivity requires substantial investments. However, the removal of migration barriers also enables the upstream invasion of non-native species into spawning areas, with potential negative effects on recruitment of threatene...
Article
Full-text available
The question as to how early life experiences are stored on a molecular level and affect traits later in life is highly topical in ecology, medicine, and epigenetics. In this study, we use a fish model to investigate whether DNA methylation mediates early life experiences and predetermines a territorial male reproductive phenotype. In fish, adult r...
Article
Full-text available
The article addresses citizen competence for sustainable consumption in adults. It discusses whether it is possible to develop educational offerings for adults (being by nature short and isolated) that effectively promote this competence and whether it makes a difference if sustainable consumption is approached by focusing on good life (quality of...
Preprint
Full-text available
How early life experiences are stored on a molecular level and affect behavioural phenotypes later in life is not well understood. In fish, reproductive phenotypes are often easily discernible and frequently depend on previous life experiences. DNA methylation is an epigenetic mechanism which is both sensitive to environmental conditions and stable...
Poster
Barriers, such as fish passes hinder the upstream migration of fish. Non-benthic migratory fish species may surpass barriers via active swimming and are well investigated. Benthic fish species are rarely studied. Measurements of their movements and behavior in the flow is more difficult and of higher complexity. Vortices and turbulences are assumed...
Article
Full-text available
The vast majority of global freshwater ecosystems are small lakes with less than 100 m2 surface area. These lakes are often unconnected to other water bodies but frequently host fish populations. Existing explanations for how fish colonize such remote habitats often involve birds as vectors transporting fish eggs as propagules. In this study, we ai...
Article
Full-text available
Individual-based models (IBMs) incorporating realistic representations of key range-front processes such as dispersal can be used as tools to investigate the dynamics of invasive species. Managers can apply insights from these models to take effective action to prevent further spread and prioritize measures preventing establishment of invasive spec...
Article
Full-text available
Research on the uptake and effects of bioplastics by aquatic organisms is still in its infancy. Here, we aim to advance the field by comparing uptake and effects of microplastic particles (MPP) of a biodegradable bioMPP (polyhydroxybutyrate (PHB)) and petroleum-based MPP (polymethylmethacrylate (PMMA)) in the freshwater amphipod Gammarus fossarum....
Article
Full-text available
Sustainable development of hydropower demands a holistic view of potential impacts of water level regulation (WLR) on reservoir ecosystems. Most environmental studies of hydropower have focused on rivers, whereas environmental effects of hydropower operations on reservoirs are less well understood. Here, we synthesize knowledge on how WLR from hydr...
Article
1.When prevention of invasive species’ introductions fails, society faces the challenge to manage these invasive species in an effective and efficient way. The success of this depends on biological aspects and on cooperation between decision makers and scientists. Using the case of the round goby Neogobius melanostomus, one of Europe's worst invasi...
Article
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Animal personalities are an important factor that affects the dispersal of animals. In the context of aquatic species, dispersal modeling needs to consider that most freshwater ecosystems are highly fragmented by barriers reducing longitudinal connectivity. Previous research has incorporated such barriers into dispersal models under the neutral ass...
Article
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Increasing input of terrestrial dissolved organic carbon (DOC) has been identified as a widespread environmental phenomenon in many aquatic ecosystems. Terrestrial DOC influences basal trophic levels: it can subsidize pelagic bacterial production and impede benthic primary production via light attenuation. However, little is known about the impacts...
Article
Full-text available
Hydropower reservoirs play an increasingly important role for the global electricity supply. Reservoirs are anthropogenically-dominated ecosystems because hydropower operations induce artificial water level fluctuations (WLF) that exceed natural fluctuations in frequency and amplitude. These WLF have detrimental ecological effects, which can be qua...
Article
The study of individual movement patterns and habitat choice is a fundamental step to assess an invasive species’ range extension and to inform possible management options. The spiny-cheek crayfish is an invasive species currently spreading in Europe and also in Lake Constance. This is of concern because the greater Lake Constance area still holds...
Article
Full-text available
Non-native invasive species are a major threat to biodiversity, especially in freshwater ecosystems. Freshwater ecosystems are naturally rather isolated from one another. Nonetheless, invasive species often spread rapidly across water sheds. This spread is to a large extent realized by human activities that provide vectors. For example, recreationa...
Article
Full-text available
Colonization events, range expansions and species invasions leave genetic signatures in the genomes of invasive organisms, and produce intricate special patterns. Predictions have been made as to how those patterns arise, but only very rarely, genetic processes can be monitored in real time during range expansions. In an attempt to change that, we...
Data
Appendix S6. Questions provided in the questionnaire (transferred into English by the authors).
Data
Appendix S2. Types of artificial substrates used by gobies for spawning in the harbor Basel.
Data
Appendix S5 . Information provided to the participants of the transdisciplinary workshop (transferred into English by the authors, square brackets: additional explanations to improve clarity for this paper).
Data
Appendix S1. Publications suggesting goby eggs as propagules and boats as vectors.
Data
Appendix S7. Air exposure does not affect hatching dynamics of goby larvae.
Data
Appendix S3. Map showing all 11 in‐stream barriers upstream of the potential source population and the numbers of passages of recreational boats across them.
Data
Appendix S4. Detailed depiction of spawning traps used to retrieve eggs for experiments and to estimate the numbers of propagules spawned onto artificial substrates in the harbor where the potential source population has established.
Data
Appendix S8. Questions provided in the questionnaire (transferred into English by the authors).
Article
Full-text available
Managing invasive species is a major challenge for society. In the case of newly established invaders, rapid action is key for a successful management. Here, we develop, describe and recommend a three-step transdisciplinary process (the "butterfly model") to rapidly initiate action for invasion management. In the framing of a case study, we present...
Article
Full-text available
Invasive species are one of the greatest threats to biodiversity worldwide, and to successfully manage their introductions is a major challenge for society. Knowledge on the impacts of an invasive species is essential for motivating decision makers and optimally allocating management resources. We use a prominent invasive fish species, the round go...
Article
In this study we show that the number, position and shape of stripes were sufficiently unique to demonstrate that juvenile Eurasian perch Perca fluviatilis can be individually identified based on their stripe patterns. The stripe patterns in perch and also other species may thus be used in experiments as an alternative to conventional marking techn...
Article
Full-text available
Water level fluctuations in lakes lead to shoreline displacement. The seasonality of flooding or beaching of the littoral area affects nutrient cycling, redox gradients in sediments, and life cycles of aquatic organisms. Despite the ecological importance of water level fluctuations, we still lack a method that assesses water levels in the context o...
Article
Full-text available
Theory predicts that prey facing a combination of predators with different feeding modes have two options: to express a response against the feeding mode of the most dangerous predator, or to express an intermediate response. Intermediate phenotypes protect equally well against several feeding modes, rather than providing specific protection agains...
Article
Full-text available
Mit der Globalisierung steigt auch die Zahl nicht-heimischer Fischarten in unseren Gewässern. Sie kommen über künstliche Kanäle, werden mit Ballastwasser verschleppt oder heften ihre Eier an Schiffe und andere Gegenstände. Viele dieser Arten bleiben unbemerkt, einige können sich jedoch etablieren und sogar Schaden anrichten. Wir zeigen am Beispiel...
Article
Non-native fishes in rivers and seas The number of non-native fish species in our water bodies is increasing in the course of globalisation. They navigate artificial canals, travel in ballast water of ships or are displaced as eggs attached to ships and other materials. Many of these species remain unnoticed but some may establish a reproductive po...
Article
Full-text available
Vertebrates harbour diverse communities of symbiotic gut microbes. Host diet is known to alter microbiota composition, implying that dietary treatments might alleviate diseases arising from altered microbial composition ('dysbiosis'). However, it remains unclear whether diet effects are general or depend on host genotype. Here we show that gut micr...
Article
Full-text available
Vertebrates' diets profoundly influence the composition of symbiotic gut microbial communities. Studies documenting diet-microbiota associations typically focus on univariate or categorical diet variables. However, in nature individuals often consume diverse combinations of foods. If diet components act independently, each providing distinct microb...
Article
Full-text available
Human-induced nutrient input can change the selection regime and lead to the loss of biodiversity. For example, eutrophication caused speciation reversal in polymorphic whitefish populations through a flattening of littoral-pelagic selection gradients. We investigated the current state of phenotypic and genetic diversity in whitefish (Coregonus mac...
Data
δC13 and δN15 biplot of gangfisch, total niche area as standard ellipses (SEA) (Coregonus macrophthalmus).
Data
Single locus pairwise comparisons of genetic differentiation (FST) between whitefisch (Coregonus macrophthalmus) caught at three different depths in Lake Constance.
Data
Full-text available
Schematic drawing of a whitefish and location of the 16 landmarks used for the geometric morphometrics analyses.
Data
Number of gill rakers of gangfish caught at different depths.
Data
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δC13 and δN15 biplot of gangfisch, total niche area as convex hull (TA) (Coregonus macrophthalmus).
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Traditional catch of gangfisch (Coregonus macrophtalamus) in shallow waters of Lake Constance.
Data
Population genetic analysis summary statistics for whitefish (Coregonus macrophthalmus).
Article
Full-text available
While phenotypic responses to direct species interactions are well studied, we know little about the consequences of indirect interactions for phenotypic divergence. In this study we used lakes with and without the zebra mussel to investigate effects of indirect trophic interactions on phenotypic divergence between littoral and pelagic perch. We fo...
Article
Full-text available
A number of Ponto-Caspian gobiid species are currently invading European coasts and freshwaters. They do not only present a nuisance to fishermen, but evidence suggests that they compete with native benthic fishes and may contribute to changes in ecosystem function. This paper reports the presence of round goby Neogobius melanostomus individuals an...
Article
Full-text available
Trait combinations that lead to a higher efficiency in resource utilization are important drivers of divergent natural selection and adaptive radiation. However, variation in environmental features might constrain foraging in complex ways and therefore impede the exploitation of critical resources. We tested the effect of water transparency on intr...
Data
VIP scores of PLS analysis identifying the main factors related to morphological divergence. VIP is normalized, the average squared VIP value is 1. Terms in the model with a VIP>1 are important. (TIF)
Data
Variables used in the PLS analysis. (DOCX)
Data
Diet composition (%) of perch stomach content from A) littoral and B) pelagic fish. Other = Chaoborus sp., Rotatoria, fish, and terrestrial prey. (TIF)