scholarly journals Reconstructing past species assemblages reveals the changing patterns and drivers of extinction through time

2012 ◽  
Vol 279 (1744) ◽  
pp. 4024-4032 ◽  
Author(s):  
Lindell Bromham ◽  
Robert Lanfear ◽  
Phillip Cassey ◽  
Gillian Gibb ◽  
Marcel Cardillo
Keyword(s):  
New Zealand ◽  
Driving Forces ◽  
Extinction Risk ◽  
Bird Species ◽  
Faunal Assemblage ◽  
The Past ◽  
Threat Status ◽  
Changing Patterns ◽  
Fossil Records ◽  
Species Declines

Predicting future species extinctions from patterns of past extinctions or current threat status relies on the assumption that the taxonomic and biological selectivity of extinction is consistent through time. If the driving forces of extinction change through time, this assumption may be unrealistic. Testing the consistency of extinction patterns between the past and the present has been difficult, because the phylogenetically explicit methods used to model present-day extinction risk typically cannot be applied to the data from the fossil record. However, the detailed historical and fossil records of the New Zealand avifauna provide a unique opportunity to reconstruct a complete, large faunal assemblage for different periods in the past. Using the first complete phylogeny of all known native New Zealand bird species, both extant and extinct, we show how the taxonomic and phylogenetic selectivity of extinction, and biological correlates of extinction, change from the pre-human period through Polynesian and European occupation, to the present. These changes can be explained both by changes in primary threatening processes, and by the operation of extinction filter effects. The variable patterns of extinction through time may confound attempts to identify risk factors that apply across time periods, and to infer future species declines from past extinction patterns and current threat status.

scholarly journals iucn_sim: A new program to simulate future extinctions based on IUCN threat status

2019 ◽  
Author(s):  
Tobias Andermann ◽  
Søren Faurby ◽  
Robert Cooke ◽  
Daniele Silvestro ◽  
Alexandre Antonelli
Keyword(s):  
Extinction Risk ◽  
Conservation Status ◽  
Bird Species ◽  
Time Frame ◽  
Monte Carlo Algorithm ◽  
Individual Species ◽  
Specific Information ◽  
Extinction Rates ◽  
Threat Status ◽  
Generation Length

AbstractThe ongoing environmental crisis poses an urgent need to forecast the who, where, and when of future species extinctions, as such information is crucial for targeting conservation efforts. Commonly, such forecasts are made based on conservation status assessments produced by the International Union for Conservation of Nature (IUCN). However, when researchers apply these IUCN conservation status data for predicting future extinctions, important information is often omitted, which can impact the accuracy of these predictions.Here we present a new approach and a software for simulating future extinctions based on IUCN conservation status information, which incorporates generation length information of individual species when modeling extinction risks. Additionally, we explicitly model future changes in conservation status for each species, based on status transition rates that we estimate from the IUCN assessment history of the last decades. Finally, we apply a Markov chain Monte Carlo algorithm to estimate extinction rates for each species, based on the simulated future extinctions. These estimates inherently incorporate the chances of conservation status changes and the generation length for each given species and are specific to the simulated time frame.We demonstrate the utility of our approach by estimating extinction rates for all bird species. Our average extinction risk estimate for the next 100 years across all birds is 6.98 × 10−4 extinctions per species-year, and we predict an expected biodiversity loss of between 669 to 738 bird species within that time frame. Further, the rate estimates between species sharing the same IUCN status show larger variation than the rates estimated with alternative approaches, which reflects expected differences in extinction risk among taxa of the same conservation status. Our method demonstrates the utility of applying species-specific information to the estimation of extinction rates, rather than assuming equal extinction risks for species assigned to the same conservation status.

Changes in Wetland Landscape Pattern and Its Driving Forces of Binhai New Area of Tianjin City in the Past Three Decades

2010 ◽  
Vol 12 (3) ◽  
pp. 436-443 ◽  
Author(s):  
Weiqing MENG ◽  
Hongyuan LI ◽  
Cui HAO ◽  
Xunqiang MO
Keyword(s):  
Landscape Pattern ◽  
Driving Forces ◽  
Wetland Landscape ◽  
The Past ◽  
Tianjin City

Driving forces of nature and human activities on water and sediment changes in the middle reaches of the Yellow River in the past 100 years

2021 ◽  
Author(s):  
Jing Xu ◽  
Xiaohui Jiang ◽  
Haotian Sun ◽  
Huanyu Xu ◽  
Xue Zhong ◽  
...  
Keyword(s):  
Human Activities ◽  
Driving Forces ◽  
Yellow River ◽  
The Yellow River ◽  
The Past ◽  
Water And Sediment

scholarly journals Knowledge and perceptions of cardiopulmonary resuscitation amongst New Zealand podiatrists: a web-based survey

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Angela Brenton-Rule ◽  
Daniel Harvey ◽  
Kevin Moran ◽  
Daniel O’Brien ◽  
Jonathon Webber
Keyword(s):  
New Zealand ◽  
Cardiopulmonary Resuscitation ◽  
Life Support ◽  
Survival Rates ◽  
Sudden Cardiac Arrest ◽  
Cross Sectional Study ◽  
Trial Registration ◽  
Cross Sectional ◽  
Web Based ◽  
The Past

Abstract Background Podiatrists in New Zealand have a duty of care to assist patients in an emergency, and current cardiopulmonary resuscitation (CPR) certification is a requirement for registration. However, it is unknown how competent and confident podiatrists are in administering CPR and how they would respond in an emergency. Having a health professional who has a competent knowledge of CPR and skills in basic life support, can improve survival rates from sudden cardiac arrest. Therefore, the aim of this study was to survey New Zealand podiatrists to determine their CPR knowledge and qualifications; beliefs about the application of CPR; and perceptions of their competency in CPR. Methods This cross-sectional study used a web-based survey. Participants were New Zealand registered podiatrists with a current annual practising certificate. The 31-item survey included questions to elicit demographic information, CPR practice and attitudes, and CPR knowledge. Responses were collected between March and August 2020. Results 171 podiatrists responded to the survey. 16 % of the podiatrists (n = 28) had performed CPR in an emergency, with a 50 % success rate. Participants were predominantly female (n = 127, 74 %) and working in private practice (n = 140,82 %). Nearly half of respondents were younger than 40 years (n = 75,44 %) and had less than 10 years of clinical experience (n = 73, 43 %). Nearly all (n = 169,97 %) participants had received formal CPR training in the past two years, with 60 % (n = 105) receiving training in the past 12 months. Most respondents (n = 167,98 %) self-estimated their CPR ability as being effective, very effective, or extremely effective. Participants’ knowledge of CPR was variable, with the percentage of correct answers for CPR protocol statements ranging between 20 and 90 %. Conclusions This study provides the first insight into New Zealand podiatrists’ CPR knowledge and perceptions. Podiatrists were found to have high levels of CPR confidence but demonstrated gaps in CPR knowledge. Currently, New Zealand registered podiatrists require biennial CPR re-certification. However, resuscitation authorities in New Zealand and overseas recommend an annual update of CPR skills. Based on this study’s findings, and in line with Australia and the United Kingdom, the authors recommend a change from biennial to annual CPR re-certification for podiatrists in New Zealand. Trial registration The study was registered with the Australian New Zealand Clinical Trials Registry (ACTRN12620001144909).

scholarly journals Asexuals negotiate the ‘onslaught of the heteronormative’

Sexualities ◽  
2021 ◽  
pp. 136346072199338
Author(s):  
Tiina Vares
Keyword(s):  
New Zealand ◽  
Everyday Life ◽  
Cultural Context ◽  
Emotional Responses ◽  
Emotional Impact ◽  
Individual Interviews ◽  
The Past ◽  
Aotearoa New Zealand ◽  
The Everyday ◽  
Research Gap

Although theorizing and research about asexuality have increased in the past decade, there has been minimal attention given to the emotional impact that living in a hetero- and amato-normative cultural context has on those who identify as asexual. In this paper, I address this research gap through an exploration of the ‘work that emotions do’ (Sara Ahmed) in the everyday lives of asexuals. The study is based on 15 individual interviews with self-identified asexuals living in Aotearoa New Zealand. One participant in the study used the phrase, ‘the onslaught of the heteronormative’ to describe how he experienced living as an aromantic identified asexual in a hetero- and amato-normative society. In this paper I consider what it means and feels like to experience aspects of everyday life as an ‘onslaught’. In particular, I look at some participants’ talk about experiencing sadness, loss, anger and/or shame as responses to/effects of hetero- and amato-normativity. However, I suggest that these are not only ‘negative’ emotional responses but that they might also be productive in terms of rethinking and disrupting hetero- and amato-normativity.

CPT-based liquefaction case histories compiled from three earthquakes in Canterbury, New Zealand

2021 ◽  
pp. 875529302199636
Author(s):  
Mertcan Geyin ◽  
Brett W Maurer ◽  
Brendon A Bradley ◽  
Russell A Green ◽  
Sjoerd van Ballegooy
Keyword(s):  
New Zealand ◽  
Case History ◽  
Prediction Models ◽  
Free Field ◽  
Case Histories ◽  
Cone Penetration ◽  
History Data ◽  
The Past ◽  
Surface Manifestation ◽  
The Many

Earthquakes occurring over the past decade in the Canterbury region of New Zealand have resulted in liquefaction case-history data of unprecedented quantity. This provides the profession with a unique opportunity to advance the prediction of liquefaction occurrence and consequences. Toward that end, this article presents a curated dataset containing ∼15,000 cone-penetration-test-based liquefaction case histories compiled from three earthquakes in Canterbury. The compiled, post-processed data are presented in a dense array structure, allowing researchers to easily access and analyze a wealth of information pertinent to free-field liquefaction response (i.e. triggering and surface manifestation). Research opportunities using these data include, but are not limited to, the training or testing of new and existing liquefaction-prediction models. The many methods used to obtain and process the case-history data are detailed herein, as is the structure of the compiled digital file. Finally, recommendations for analyzing the data are outlined, including nuances and limitations that users should carefully consider.

Primary Exploration on Opportunities for the Formation of New Zealand’s Creative Film & TV Industry

2013 ◽  
Vol 311 ◽  
pp. 334-338
Author(s):  
Qi Li
Keyword(s):  
New Zealand ◽  
Radiation Effects ◽  
International Markets ◽  
Rapid Rise ◽  
Market Environment ◽  
Sharp Rise ◽  
The Past ◽  
Labor Division ◽  
Technology Market ◽  
Production Industry

Over the past two decades, New Zealand has seen rapid and sharp rise of film & TV industry, developed competitive edges of film production industry, participated in labor division in the international markets and shaped creative film &TV industry with radiation effects. This paper analyzes the historical opportunities for the rapid rise of film & TV industry in Zealand from the perspectives of changes to the market environment of technology, market, industry labor division, etc.

scholarly journals Extinction Risk Assessment of the Greek Endemic Flora

Biology ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 195 ◽  
Author(s):  
Konstantinos Kougioumoutzis ◽  
Ioannis P. Kokkoris ◽  
Maria Panitsa ◽  
Arne Strid ◽  
Panayotis Dimopoulos
Keyword(s):  
Risk Assessment ◽  
Land Use ◽  
Protected Area ◽  
Extinction Risk ◽  
Endemic Plant ◽  
The Past ◽  
Extinction Risk Assessment ◽  
Endemic Flora ◽  
Biodiversity Decline ◽  
Iucn Criteria

Human-induced biodiversity decline has been on the rise for the past 250 years, due to various causes. What is equally troubling, is that we are unaware which plants are threatened and where they occur. Thus, we are far from reaching Aichi Biodiversity Target 2, i.e., assessing the extinction risk of most species. To that end, based on an extensive occurrence dataset, we performed an extinction risk assessment according to the IUCN Criteria A and B for all the endemic plant taxa occurring in Greece, one of the most biodiverse countries in Europe, in a phylogenetically-informed framework and identified the areas needing conservation prioritization. Several of the Greek endemics are threatened with extinction and fourteen endemics need to be prioritized, as they are evolutionary distinct and globally endangered. Mt. Gramos is identified as the most important conservation hotspot in Greece. However, a significant portion of the identified conservation hotspots is not included in any designated Greek protected area, meaning that the Greek protected areas network might need to be at least partially redesigned. In the Anthropocene era, where climate and land-use change are projected to alter biodiversity patterns and may force many species to extinction, our assessment provides the baseline for future conservation research, ecosystem services maintenance, and might prove crucial for the timely, systematic and effective aversion of plant extinctions in Greece.

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