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Showing 1 to 12 of 31 entries
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Monitoring of biological diversity in space and time

diversity

Yoccoz NG, Nichols JD, Boulinier T.
GSID: xvz0BAcDZv8J
NG Yoccoz, JD Nichols, T Boulinier - Trends in ecology & evolution, 2001 - Elsevier

… Biological diversity can be studied and managed at levels of biological organization ranging from genes to ecosystems. We restrict this article to species diversity, often referred to as ecological diversity. Ecologists have developed an almost endless number of...

Vole cycles.

Trends in ecology & evolution

Lambin X, Ims RA, Steen H, Yoccoz NG.
PMID: 21237007
Trends Ecol Evol. 1995 May;10(5):204. doi: 10.1016/s0169-5347(00)89055-2.

No abstract available.

Toward understanding the effect of top predators on ecosystems.

F1000 biology reports

Lecomte N, Ehrich D, Ims RA, Yoccoz NG.
PMID: 20948660
F1000 Biol Rep. 2009 Mar 24;1:26. doi: 10.3410/B1-26.

To what extent top predators - carnivores at the top of food chains - drive or just respond to ecosystem dynamics is a central, but partially unresolved, question in ecology. In this report, we highlight how different research approaches...

The spectacular human nose: an amplifier of individual quality?.

PeerJ

Mikalsen SK, Folstad I, Yoccoz NG, Laeng B.
PMID: 24765588
PeerJ. 2014 Apr 17;2:e357. doi: 10.7717/peerj.357. eCollection 2014.

Amplifiers are signals that improve the perception of underlying differences in quality. They are cost free and advantageous to high quality individuals, but disadvantageous to low quality individuals, as poor quality is easier perceived because of the amplifier. For...

Are responses of herbivores to environmental variability spatially consistent in alpine ecosystems?.

Global change biology

Nielsen A, Yoccoz NG, Steinheim G, Storvik GO, Rekdal Y, Angeloff M, Pettorelli N, Holand Ø, Mysterud A.
PMID: 28741831
Glob Chang Biol. 2012 Oct;18(10):3050-3062. doi: 10.1111/j.1365-2486.2012.02733.x. Epub 2012 Jun 19.

Animal responses to global climate variation might be spatially inconsistent. This may arise from spatial variation in factors limiting populations' growth or from differences in the links between global climate patterns and ecologically relevant local climate variation. For example,...

Sedimentary ancient DNA shows terrestrial plant richness continuously increased over the Holocene in northern Fennoscandia.

Science advances

Rijal DP, Heintzman PD, Lammers Y, Yoccoz NG, Lorberau KE, Pitelkova I, Goslar T, Murguzur FJA, Salonen JS, Helmens KF, Bakke J, Edwards ME, Alm T, Bråthen KA, Brown AG, Alsos IG.
PMID: 34330702
Sci Adv. 2021 Jul 30;7(31). doi: 10.1126/sciadv.abf9557. Print 2021 Jul.

The effects of climate change on species richness are debated but can be informed by the past. Here, we generated a sedimentary ancient DNA dataset covering 10 lakes and applied novel methods for data harmonization. We assessed the impact...

Warm temperatures during cold season can negatively affect adult survival in an alpine bird.

Ecology and evolution

Chiffard J, Delestrade A, Yoccoz NG, Loison A, Besnard A.
PMID: 31788195
Ecol Evol. 2019 Oct 25;9(22):12531-12543. doi: 10.1002/ece3.5715. eCollection 2019 Nov.

Climate seasonality is a predominant constraint on the lifecycles of species in alpine and polar biomes. Assessing the response of these species to climate change thus requires taking into account seasonal constraints on populations. However, interactions between seasonality, weather...

Influence of reproductive output on divorce rates in polar seabirds.

Ecology and evolution

Mercier G, Yoccoz NG, Descamps S.
PMID: 34646447
Ecol Evol. 2021 Sep 12;11(19):12989-13000. doi: 10.1002/ece3.7775. eCollection 2021 Oct.

The high occurrence of social monogamy in birds has led to questions about partner fidelity, or the perennial nature of monogamy from one breeding season to another. Despite the evolutionary advantages of partner fidelity, divorce occurs among 95% of...

A probabilistic algorithm to process geolocation data.

Movement ecology

Merkel B, Phillips RA, Descamps S, Yoccoz NG, Moe B, Strøm H.
PMID: 27891228
Mov Ecol. 2016 Nov 18;4:26. doi: 10.1186/s40462-016-0091-8. eCollection 2016.

BACKGROUND: The use of light level loggers (geolocators) to understand movements and distributions in terrestrial and marine vertebrates, particularly during the non-breeding period, has increased dramatically in recent years. However, inferring positions from light data is not straightforward, often...

Incorporating capture heterogeneity in the estimation of autoregressive coefficients of animal population dynamics using capture-recapture data.

Ecology and evolution

Nicolau PG, Sørbye SH, Yoccoz NG.
PMID: 33304489
Ecol Evol. 2020 Aug 31;10(23):12710-12726. doi: 10.1002/ece3.6642. eCollection 2020 Dec.

Population dynamic models combine density dependence and environmental effects. Ignoring sampling uncertainty might lead to biased estimation of the strength of density dependence. This is typically addressed using state-space model approaches, which integrate sampling error and population process estimates....

Transferability of biotic interactions: Temporal consistency of arctic plant-rodent relationships is poor.

Ecology and evolution

Soininen EM, Henden JA, Ravolainen VT, Yoccoz NG, Bråthen KA, Killengreen ST, Ims RA.
PMID: 30386568
Ecol Evol. 2018 Sep 17;8(19):9697-9711. doi: 10.1002/ece3.4399. eCollection 2018 Oct.

Variability in biotic interaction strength is an integral part of food web functioning. However, the consequences of the spatial and temporal variability of biotic interactions are poorly known, in particular for predicting species abundance and distribution. The amplitude of...

Analysing diet of small herbivores: the efficiency of DNA barcoding coupled with high-throughput pyrosequencing for deciphering the composition of complex plant mixtures.

Frontiers in zoology

Soininen EM, Valentini A, Coissac E, Miquel C, Gielly L, Brochmann C, Brysting AK, Sønstebø JH, Ims RA, Yoccoz NG, Taberlet P.
PMID: 19695081
Front Zool. 2009 Aug 20;6:16. doi: 10.1186/1742-9994-6-16.

BACKGROUND: In order to understand the role of herbivores in trophic webs, it is essential to know what they feed on. Diet analysis is, however, a challenge in many small herbivores with a secretive life style. In this paper,...

Showing 1 to 12 of 31 entries