scholarly journals “Keeping the wet in wetlands”: A case study of wetland response to projected changes in climate at Mathews Lagoon, Boggy Pond and Wairio Wetlands

2021 ◽  
Author(s):  
◽  
Samwell Mytton Warren

<p>Wetlands are some of the most biodiverse ecosystems on the planet. They are critical for global, regional and local ecosystems, and provide considerable social and economic value for human populations (Findlayson, et. al., 2011). Wetlands have been extensively destroyed in many developed countries, establishing a growing concern and greater awareness of the importance of wetlands in the global hydrological cycle - for climate regulation, and for ecological migration (Pfadenhauer & Grootjans, 1999). Changes in climate, driven by increases in atmospheric concentrations of greenhouse gasses are predicted to cause significant changes to the spatial and temporal distributions in rainfall. Since water is the dominant forcing component in the structural development of wetland systems, they are particularly susceptible to changes in climate. While considerable work is now being conducted globally to better understand how wetlands will respond to changes in climate, little work has been conducted in New Zealand to identify the vulnerability of New Zealand wetland systems.  Recent projection by NIWA (2016a) on regional changes in climate have been used to assess how three wetland systems (Wairio Stage 1, Boggy Pond, and Mathews Lagoon), located in the Lower Wairarapa Valley may respond to changes in climate. This study identifies relationships between ground and surface water, examines the interactions and connections between the three wetlands, and explores the sensitivity of the wetlands to climate-induced changes in evapotranspiration, temperature, humidity, wind speed, and rainfall. Wairio stage 1 has been identified as the most susceptible wetland of the three due to a lack of recharge source, while Boggy Pond is the least susceptible due to its interaction/connection with the local groundwater system.</p>

2021 ◽  
Author(s):  
◽  
Samwell Mytton Warren

<p>Wetlands are some of the most biodiverse ecosystems on the planet. They are critical for global, regional and local ecosystems, and provide considerable social and economic value for human populations (Findlayson, et. al., 2011). Wetlands have been extensively destroyed in many developed countries, establishing a growing concern and greater awareness of the importance of wetlands in the global hydrological cycle - for climate regulation, and for ecological migration (Pfadenhauer & Grootjans, 1999). Changes in climate, driven by increases in atmospheric concentrations of greenhouse gasses are predicted to cause significant changes to the spatial and temporal distributions in rainfall. Since water is the dominant forcing component in the structural development of wetland systems, they are particularly susceptible to changes in climate. While considerable work is now being conducted globally to better understand how wetlands will respond to changes in climate, little work has been conducted in New Zealand to identify the vulnerability of New Zealand wetland systems.  Recent projection by NIWA (2016a) on regional changes in climate have been used to assess how three wetland systems (Wairio Stage 1, Boggy Pond, and Mathews Lagoon), located in the Lower Wairarapa Valley may respond to changes in climate. This study identifies relationships between ground and surface water, examines the interactions and connections between the three wetlands, and explores the sensitivity of the wetlands to climate-induced changes in evapotranspiration, temperature, humidity, wind speed, and rainfall. Wairio stage 1 has been identified as the most susceptible wetland of the three due to a lack of recharge source, while Boggy Pond is the least susceptible due to its interaction/connection with the local groundwater system.</p>


2013 ◽  
Vol 31 (4_suppl) ◽  
pp. 370-370
Author(s):  
Afrasyab Khan ◽  
Jagdish Prasad

370 Background: New Zealand has a high incidence of colorectal cancer; the death rate is the highest amongst developed countries. New Zealand does not have a national screening program for colorectal cancer yet. This study was done in a region with a higher proportion Maori ethnicity. We hypothesized that there are differences in presentation and pathology of colorectal cancer between Maori and European people. Methods: A review of new cases of colorectal cancer presenting over a period of three years (2008-2011) at Whakatane Hospital was done. Data was collected from clinical records and entered into SPSS software. Results: 113 new cases of colorectal cancer were identified. Median age was 73 years. Maori patients were younger than the rest (median age 60 vs 74.5; p < 0.05). 95 patients were of European ethnicity and 15 were Maori. The predominant sign/symptom on presentation was PR bleeding (32%). Only 5 cases were asymptomatic and diagnosed on surveillance colonoscopy. The histologic type of tumor was adenocarcinoma in 111 cases. The most common site of the tumors was the rectum (18.6%). 34.5% cases had localized disease (stage 1, 2A) with no significant difference between Maori and the rest.18.6% cases had distant metastasis with no significant difference between Maori and the rest. Curative surgery was not done in 16 patients due to advanced disease, comorbidities or patient refusal. Conclusions: A higher proportion of patients were diagnosed with localized disease at presentation compared to the rest of New Zealand.. Fewer Maori patients had colorectal cancer in view of the higher proportion of Maori in the area (42-61%). The age of Maori was significantly lower than the rest. Colorectal cancer screening in New Zealand will likely detect cancer earlier. [Table: see text]


Pathogens ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 191
Author(s):  
Lucia Rivas ◽  
Hugo Strydom ◽  
Shevaun Paine ◽  
Jing Wang ◽  
Jackie Wright

The rate of yersiniosis in New Zealand (NZ) is high compared with other developed countries, and rates have been increasing over recent years. Typically, >99% of human cases in NZ are attributed to Yersinia enterocolitica (YE), although in 2014, a large outbreak of 220 cases was caused by Yersinia pseudotuberculosis. Up until 2012, the most common NZ strain was YE biotype 4. The emergent strain since this time is YE biotype 2/3 serotype O:9. The pathogenic potential of some YE biotypes remains unclear. Most human cases of yersiniosis are considered sporadic without an identifiable source. Key restrictions in previous investigations included insufficient sensitivity for the isolation of Yersinia spp. from foods, although foodborne transmission is the most likely route of infection. In NZ, YE has been isolated from a variety of sick and healthy domestic and farm animals but the pathways from zoonotic reservoir to human remain unproven. Whole-genome sequencing provides unprecedented discriminatory power for typing Yersinia and is now being applied to NZ epidemiological investigations. A “One-Health” approach is necessary to elucidate the routes of transmission of Yersinia and consequently inform targeted interventions for the prevention and management of yersiniosis in NZ


2018 ◽  
Vol 20 (5) ◽  
pp. 434-448 ◽  
Author(s):  
Stuti Saxena

Purpose With the ongoing drives towards Open Government Data (OGD) initiatives across the globe, governments have been keen on pursuing their OGD policies to ensure transparency, collaboration and efficiency in administration. As a developing country, India has recently adopted the OGD policy (www.data.gov.in); however, the percolation of this policy in the States has remained slow. This paper aims to underpin the “asymmetry” in OGD framework as far as the Indian States are concerned. Besides, the study also assesses the contribution of “Open Citizens” in furthering the OGD initiatives of the country. Design/methodology/approach An exploratory qualitative following a case study approach informs the present study using documentary analysis where evidentiary support from five Indian States (Uttar Pradesh, Telangana, West Bengal, Sikkim and Gujarat) is being drawn to assess the nature and scope of the OGD framework. Further, conceptualization for “Open Citizen” framework is provided to emphasize upon the need to have aware, informed and pro-active citizens to spearhead the OGD initiatives in the country. Findings While the National OGD portal has a substantial number of data sets across different sectors, the States are lagging behind in the adoption and implementation of OGD policies, and while Telangana and Sikkim have been the frontrunners in adoption of OGD policies in a rudimentary manner, others are yet to catch up with them. Further, there is “asymmetry” in terms of the individual contribution of the government bodies to the open data sets where some government bodies are more reluctant to share their datasets than the others. Practical implications It is the conclusion of the study that governments need to institutionalize the OGD framework in the country, and all the States should appreciate the requirement of adopting a robust OGD policy for furthering transparency, collaboration and efficiency in administration. Social implications As an “Open Citizen”, it behooves upon the citizens to be pro-active and contribute towards the open data sets which would go a long way in deriving social and economic value out of these data sets. Originality/value While there are many studies on OGD in the West, studies focused upon the developing countries are starkly lacking. This study plugs this gap by attempting a comparative analysis of the OGD frameworks across Indian States. Besides, the study has provided a conceptualization of “Open Citizen” (OGD) which may be tapped for further research in developing and developed countries to ascertain the linkage between OGD and OC.


2019 ◽  
Vol 28 (51) ◽  
pp. 89-104
Author(s):  
Claudia Yasmin Montaño-Chinchilla ◽  
Jorge Martin Molina-Escobar ◽  
Ludger Oswaldo Suarez-Burgos ◽  
Elkin De Jesús Ceballos-Guerra

Pillar replacement in mining works is a technique of using the pillars that are part of the support structures having a high degree of mineralization, which attracts economic interest. The technique consists of replacing the support pillars of the mineral matrix that contain appreciable and beneficial quantities of mineral by artificial pillars that provide geomechanical structure to the operations, generating support and safety benefits greater than or equal to those provided by the original pillars and thus maximizing the intrinsic economic value of the available rock in the operation. Based on the literature regarding design techniques for the assembly of pillars used in underground gold mining, daily and continuous field inspections were conducted for two months, taking the necessary data for the proposed design following ISRM standards for data collection. The proposed pillars must consider a set of operational economic requirements and meet the geomechanical performance required to guarantee the safety and stability of the site. The design consisted of a combination of two types of pillars, one of concrete and one of mesh, cables and sterile material (granodiorite and dyke). The measurements consisted of RMR determination, the dimensions of the current pillars, and the geomechanical condition using detailed scanlines. Subsequently, the information was refined and correlated, and the degree of fracture and safety factor of the original pillars versus those proposed in the new designs were calculated. As a result, the optimal design for the construction of the replacement pillars should have dimensions of 2 x 1.7 x 1.7 meters, achieving a safety factor of 1.36, complying with the geomechanical requirements of safety and stability and yielding a profit of 405 % as a cost-benefit ratio in replacing the original pillars by those proposed in the design; the sterile material and mesh pillars would have dimensions of 2 x 2 x 2 meters.


2015 ◽  
Vol 55 (7) ◽  
pp. 869 ◽  
Author(s):  
D. F. Chapman ◽  
G. R. Edwards ◽  
A. V. Stewart ◽  
M. McEvoy ◽  
M. O'Donovan ◽  
...  

Failure over the past two to three decades to implement industry-led, systematic forage evaluation systems that translate forage performance data to animal production and economics means that the livestock industries are poorly positioned to judge how much economic benefit they are gaining from forage plant improvement and to propose future priorities and targets. The present paper identifies several knowledge gaps that must be filled to enable the value being delivered to pasture-based livestock industries by forage improvement to be determined, demonstrated to farmers and increased in the future. Seasonal yield, total annual yield, nutritive value and feeding value of pasture are all important traits for driving the productivity of pasture-based livestock production systems. From a farm systems perspective, persistence of the yield or quality advantage of new cultivars is also economically important. However, this is the least well defined of the productivity traits considered in the paper. Contrary to anecdotal reports, evidence indicates that the genetic potential of modern ryegrass cultivars to survive in grazed pastures is at least equivalent to that of older cultivars. Plant breeding in Europe and New Zealand has changed the seasonal yield, quality and intake potential of perennial ryegrass. On the basis of dry matter (DM) yield data from small-plot evaluation trials, the New Zealand forage value index indicates that the top-ranked perennial ryegrass cultivars offer between NZ$280 and NZ $650/ha per year potential additional operating profit to dairy businesses (depending on region), compared with a historical genetic base of cultivars that were first entered into yield testing programs between 1991 and 1996. The equivalent figure in Ireland (including nutritive value effects) is about €325/ha per year. These estimates are yet to be confirmed in animal production studies. In intensive dairy systems, current rates of genetic gain in DM yield lag well behind realised rates of gain in animal genetics and associated increases in feed demand per animal. Genetic gains in yield need to double from current rates (estimated at 0.5% per year); but, it is not known whether this is possible in an outcrossing species such as perennial ryegrass, which is normally grown in a mixture with other species, especially white clover. Improvements in DM yield in seasons where extra DM has greatest economic value in grazing systems should dominate breeding objectives, but this must now be augmented by consideration of the environmental impacts of intensive pasture-based livestock production systems and opportunities to mitigate this through germplasm selection. There is less evidence that nutritive or feeding value of ryegrass cultivars significantly limits animal production and profitability and useful improvements have already been made using tetraploids and later heading material.


2008 ◽  
Vol 3 (2) ◽  
pp. 1934578X0800300 ◽  
Author(s):  
Zoubida Charrouf ◽  
Dominique Guillaume

For years, in southwestern Morocco, the decline of the argan forest has been accompanied by the concomitant desert encroachment. Preservation of this forest by increasing the economic value of argan tree was proposed twenty years ago, but successful large scale production of certified, high quality argan oil, an edible oil introduced as a functional food, has only been recently achieved. Argan oil is now marketed in most developed countries, despite its elevated price, and protection of the argan forest is now seriously being considered. The aim of this work is to present the recent progress made in argan oil production, the ways explored to commercialize the oil extraction by-products, and recent attempts to use other argan tree parts as part of a long term aim to preserve the argan forest.


2006 ◽  
Vol 73 (5) ◽  
pp. 1395-1403 ◽  
Author(s):  
Ethell Vereen ◽  
R. Richard Lowrance ◽  
Dana J. Cole ◽  
Erin K. Lipp

ABSTRACT Campylobacter is the leading cause of bacterium-associated diarrhea in the United States and most developed countries. While this disease is considered a food-borne disease, many clinical cases cannot be linked to a food source. In rural and agrarian areas environmental transmission may be an important factor contributing to case loads. Here we investigated the waterborne prevalence of campylobacters in a mixed-use rural watershed in the coastal plain of southern Georgia (United States). Six sites representing various degrees of agricultural and human influence were surveyed biweekly to monthly for 1 year for the presence of culturable thermophilic campylobacters and other measures of water quality. Campylobacters were frequently present in agriculture- and sewage-impacted stretches of streams. The mean campylobacter counts and overall prevalence were highest downstream from a wastewater treatment plant that handled both human and poultry slaughterhouse waste (≤595 CFU ml−1; 100% positive); the concentrations were significantly higher than those for the four upstream sites (P < 0.05). The counts were significantly correlated with the number of fecal coliform bacteria, conductivity, pH, and concentrations of nutrients (NO3 −, PO4 3−, and NH3). Campylobacters were isolated more frequently and larger numbers were present during the summer months, similar to the occurrence of clinical cases of campylobacteriosis in this region. A multivariate model showed that the levels were significantly influenced by increasing precipitation, which also peaked in the summer. The results indicate that loading from both human and domestic animal waste may be high in the watershed studied during the summer months. Mixed-use watersheds supporting agriculture production, human populations, and wildlife may be at risk for contamination by campylobacters and may be an important route for human exposure.


2018 ◽  
Vol 2 (02) ◽  
Author(s):  
Imani Love ◽  
Chistina Pollanis

This paper will compare and contrast the reasons and statistics of development of negative health affects experienced by farmers and farm workers exposed to pesticides in both developed and developing countries. Several studies have suggested that a constant and close exposure of pesticides have negative affect on those who work closely with them. In developed countries farmers and farm workers have a lower risk of being affect by pesticides, whereas, in developing countries many workers face several disadvantages that affect the opportunities that they may be afforded. Countries in which one can clearly examine these specific global issues include developing countries such as: Ecuador, Fiji, Philippines and Costa Rica. These countries have the lack of knowledge surrounding pesticides, outdated technology, and the economic value of crops outweighing the value of human health. Whereas, within developed countries, such as the United States that are afforded more technology and that are scientifically aware and knowledgeable about pesticides, farmers and farm laborers experience improved circumstances and statistics that surround the use of pesticides amongst agricultural workers and farmers. Being that farmers and farm workers from both developed and developing countries are individuals who treat and nurture agricultural lands closely, including the application of pesticides; they inhale a high concentration of the chemicals. Another contributing factor to the inhaling of high concentration is the amount of time each worker spends concocting the mixture of insecticides, fungicides, herbicides, nematocides (used to kill nematodes, elongated cylindrical worms), and rodenticides and applying the mixture to the crops. Creation of the mixture, application of pesticides, and disposable of pesticide containers contribute in making the farmers and farm workers high at risk for developing pesticide related illnesses. By researching and further examining the various circumstances that surround the production and application of pesticides, what will be determined are what types of acute or chronic illnesses emerge and why are they more prevalent in developing countries rather than developed countries.


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