Study of the Four Lakes in the Yahara Chain Essay

Study of the Four Lakes in the Yahara Chain Essay

Length: 1158 words (3.3 double-spaced pages)

Rating: Better Essays

Open Document

Essay Preview

Carpenter et al., related the phosphorus (P) loadings, exports and concentration in the Yahara chain (a group of four lakes) in Wisconsin, USA, to some load reduction plans. The authors expected that the water quality enhancement should be in balance with the managements in all the chain.
The parameters used in this research were: 29-33 years of data for P inputs, outputs, initial concentrations for each lake and the activity of zooplankton (Daphnia pulicaria) only in for the two upper lakes (Lake Mendota and Lake Monona).
The study site included four lakes in the Yahara chain: Mendota, Monona, Waubesa and Kegonsa. The Lake Mendota is the largest and deepest of all 4 lakes, it has an influent derivative from agricultural and urban sources. The influent for Lake Monona is urban and it is the second largest and deepest lake. For Lake Waubesa, that is the smallest and less deep lake, the influent is from urban and agricultural. And for the last lake, Lake Kegonsa, has an agricultural influent and it is really shallow. For the modeling the scheme was in the same order, first Lake Mendota, then in the chain Lake Monona, in third place Lake Waubesa and at the final of the chain Lake Kegonsa.
For the model, the authors constructed an empirical model based on the P loads, summer concentrations and downstream exports. Once they had the model, they used it to determinate probability distributions for the P concentrations. This empirical model was based on data- based approach.
The information for the drainage loads, exports and concentration of P were obtained from North Temperate Lakes Long-term Ecological Research (NTL-LTER) program, US Geological Survey and Wisconsin DNR, creating with the information time series. For the loads to the La...

... middle of paper ...

... the P transportation of each lake it depended (based on the model developed) on the lake immediately upstream and in the additional drainage and the P that are on the sediments (this last parameter is more important for the lakes with less depth Lake Waubesa and Lake Kegonsa). For this study the annual proportion obtained, based on the upstream lake, was for Lake Monona 0.56, for Lake Waubesa 0.79 and for Lake Kegonsa 0.72.
With this research, the authors pretended to study the variability of the system of four lakes in Yahara chain and determinate the responses to the five different load reduction plans established, getting a model that can be used to project the response of the lake to the different plans, although authors emphasize the variability of the system and the need to take account the complex biogeochemical process that occurre in this type of systems.

Need Writing Help?

Get feedback on grammar, clarity, concision and logic instantly.

Check your paper »

Case Study : Supply Chain Management Essay

- Supply Chain Management I plan to go into supply chain management for my career. I plan to go into this career as I feel it is something I would be great at. I would like to work at a car company when I finish college. Also, this job includes traveling and I love to travel. The definition of Supply Chain Management is, “the active management of supply chain activities to maximize customer value and achieve a sustainable competitive advantage” (Handfield). Supply Chain Management goes back as far as 1898 where the word “logistics” appeared in an article (History of Logistics and Supply Chain Management )....   [tags: Supply chain management, Management, Logistics]

Better Essays
1029 words (2.9 pages)

Case Study : 4.782 International Supply Chain Management Essay

- 4.782 International supply chain management Individual assignment Case study on shiv industries. Professor: Danny Quik Student name: raghavendra s Student Id: 20140724 Email Id: Number of words: 1690 Shiv organization, a manufacturing plant situated in Raipur makes formed elastic utilized as a part of assembling autos is currently seeing its advantages fall because of expanded competition from worldwide auto producers in India after the opening up of the Indian Economy to the universal players....   [tags: Supply chain management, Supply chain, Inventory]

Better Essays
1717 words (4.9 pages)

Case Study : A Supply Chain Essay

- A supply chain may be characterized as a coordinated procedure wherein various different business elements (i.e., suppliers, makers, wholesalers, and retailers) cooperate with an end goal to: (1) gain raw materials, (2) change over these raw materials into indicated complete items, and (3) convey these last items to retailers. This chain is generally portrayed by a forward stream of materials and a retrogressive stream of data. For a considerable length of time, scientists and professionals have basically researched the different procedures of the supply chain separately....   [tags: Supply chain management, Logistics, Management]

Better Essays
4940 words (14.1 pages)

Supply Chain Management : Case Study Essay

- SUPPLY CHAIN MANAGEMENT INTRODUCTION According to Thompson (1999), a supply chain is the total combined set of production activities and commercial exchanges that are required to transform a raw material into a finished product in the hands of a consumer. Every product requires a supply chain and also every supply chain requires to be managed. It includes planning and managing of all the activities that are included in the procurement, conversion and the management sectors. The relationship with the clients, contractors, suppliers and any party that provides assistance for the completion of the project also forms part of the supply chain....   [tags: Supply chain management, Supply chain, Logistics]

Better Essays
1420 words (4.1 pages)

Essay about Case Study : Supply Chain Management

- The Current Approach to Supply Chain Management The Home Depot Supply Chain Management model is based on integrated inventory management through a centralized network of 20 distribution centers, called Rapid Deployment Centers (RDCs) and three Direct Fulfillment Centers (DFCs) aimed at the e-commerce market (Bond, 2015). Orders are processed and managed to meet current and forecasted demands, sent to the regional RDCs, which service approximately 100 stores each, and sent to retail outlets to meet stock requirements (Bond, 2015)....   [tags: Supply chain management, Management, Logistics]

Better Essays
883 words (2.5 pages)

Essay on A Research Report On Supply Chain Systems

- Now a day’s organisations have to face vibrant market. Quickness, flexibility and configuration are the main practices which have to be used by the organisation to be in this competitive market. In this report we (consultant) are going to carry out a ‘short audit’ of one day and understand the present performance of the clients’ supply chain systems then recommend possible improvements to the potential client. Quick Scan Audit Methodology (QSAM) will be the best technique used for a short audit....   [tags: Supply chain, Vertical integration]

Better Essays
912 words (2.6 pages)

Kaizen Approach : Supply Chain Management Essay

- KAIZEN APPROACH TO SUPPLY CHAIN MANAGEMENT: FIRS STEP FOR TRANSFORMING SUPPLY CHAIN INTO LEAN SUPPLY CHAIN. Chains are usually series of entities established for the sole purpose of offering services and goods to the market and the management mechanisms for supply chains vary significantly. One of the most prominent management approach employed in chains is the lean supply chain management. Kaizen approach to boost the lean control mechanism is an integral part of the process, usually applied at the early stages of the lean management strategy....   [tags: Supply chain management, Management]

Better Essays
811 words (2.3 pages)

Supply Chain Management ( Scm ) Essay

- Throughout this assessment, different views of the proposed analytical frameworks will be analysed, as well as insights from other authors about Supply Chain Management, Global Supply Chains, Global Value Chain and Global Production Networks, in order to more clearly understand the complexity of the themes addressed. Supply chain Management: Regarding Supply Chain Management (SCM), there are two different frameworks, each one with its view. The first, focused on a mainstream view, is developed by Martin Christopher while the second one is presented by Andrew Cox and it develops a more critical approach....   [tags: Supply chain, Supply chain management]

Better Essays
1411 words (4 pages)

Supply Chain Management Success ! Essay

- Supply Chain Management Success. Organizations today all consist of three main functions. These functions include marketing, operations, and financial accountability. Marketing generates the demand through the promotion or sale of a product or service. The operations is the backbone of any organization, which involves the creation of the product, the movement of the product, and final delivery of the product. The financial accountability is ultimately, how the organization is doing financially concerning accounts receivable and accounts payable....   [tags: Supply chain management, Supply chain]

Better Essays
889 words (2.5 pages)

Supply, Driven Commodity Chain Essay example

- Gereffii, G. (1994) introduced the concept of “supply” or “producer” driven and “buyer” driven commodity chain in identifying the different structure or organization of the GVCs. In producer driven chain, because of the technical knowhow and technology there will be a large lead firm being the influential one. The return is mainly boosted by scale economies. Its product specifications are very sensitive and interest in the protection of the knowledge, trust and relationships are very key in this kind of GVCs....   [tags: Value chain, Supply chain, Data type, Chain]

Better Essays
701 words (2 pages)