Author: Micah Moen

Environmental Pollution Animation 2  YouTube
What is Biodiversity & Its Importance? Environmental Science for Kids | Educational Videos by Mocomi

What is Biodiversity & Its Importance? Environmental Science for Kids | Educational Videos by Mocomi

By Micah Moen 46 Comments May 14, 2019

biodiversity biodiversity is the variety of animals and plants found on this planet including the geographic locations they are found in the diversity of species is not evenly distributed throughout the planet because life depends on many factors including geography for example tropical regions support more life than polar regions plants animals and climate work […]

Ecosystem Ecology

Ecosystem Ecology

By Micah Moen 45 Comments May 14, 2019

大家好,我是安德森先生 这个视频是环境科学第7课 讲的生态学 生态系统是地球上包括生物和非生物物质的大面积地区 巨大的海草林就是个最好的例子 海草是生产者 他们从太阳获取能量 接着把能量转换为给草食动物的食物 比方说海胆 接着这些草食动物会被像海獭这样的食肉动物捕食 问题是如果海獭死于捕食或者狩猎 海胆的数量就会大大增加 海胆通常会斩断海藻根部来进食 但有时海藻会飘走 如果海胆的数量过多就会导致海藻消失 于是整个生态系统都改变了 所以我们可以把海獭称为关键物种 如图所示 在顶部的关键物种控制了其他物种的数量 你可以把板块想成一个独立的物种 如果我们去掉了关键物种 所有物种的数量都会大大改变 也就是说有些物种比其他的物种更重要 在说到生态系统之前 我想谈谈生命是怎么由小到大组成的 比方说海胆是一个种群的一部分,也就是所有海胆所在的一个区域 所有的种群聚在一起叫做群落 在这里面再包括进无生命物质就是一个生态系统 比生态系统还要大的是生物群区 那么什么比生物群区还大呢? 答案是生物圈 也就是地球 在讲生态系统之前 我们将先开始学习主要的水陆生物群区 接下来我们会说到生态系统层间的互相作用 也就是所有生产者和食用者的互相作用 我们可以通过研究食物网来学习这个 同时我们也会研究非生物或者非生命物质 之后我们会学习个体以及壁龛的作用 也就是个体在环境里的作用 接下来我们会说到关键物种的重要性和多样性 最后我们会说说保持生态系统健康的边缘效应 现在我们开始讲陆地生物群区 在沙漠里 北方森林就是陆地生物群区的一个例子 有两个决定生物群区的因素 平均温度和平均降水量 如果你拿到一个标明平均温度和降水量的地图 你很容易就能看到生物群系有什么特征 假设我们用y轴表示降水量,这是0-400厘米的年降水量. 然后我们看表示平均温度的x轴, 最冷零下10摄氏度到最高30多摄氏度, 你大概能想到哪个生物群系是超级热或潮湿。 甚至你都可以在图上找到它。 这就是热带雨林。你可以在图上读出某一地区的温度和降水量,和这个生物群系的特点。 […]

Becoming a sustainability guru

Becoming a sustainability guru

By Micah Moen 47 Comments May 14, 2019

a soap opera will look like the crazy politics that's happening in Australia right now I feel like plastic is kind of the next big thing and if you're not from here or you have no idea what I'm talking about I am specifically referring to the plastic bag ban which is basically most states […]

Ecology Notes - Organisms & Their Relationships

Ecology Notes – Organisms & Their Relationships

By Micah Moen 4 Comments May 14, 2019

all right so this first video is going to be on organisms and their relationships so a lot of this will hopefully be pretty review for you and it's really packed with some vocab so make sure as you go through this you're writing down the terms and the definitions so first of all ecology […]

plastic in the environment

plastic in the environment

By Micah Moen 19 Comments May 14, 2019

it is everywhere needed we want it we even find it in places where we wouldn't expect it when researchers examined the stomach of a beach sperm whale in 2012 they found 30 square meters of top holding a four and a half meter long hose a nine meter long plastic rope and two flowerpots […]

Sinking Solomon Islands' climate change warning | 60 Minutes Australia

Sinking Solomon Islands' climate change warning | 60 Minutes Australia

By Micah Moen 0 Comment May 14, 2019

well Simon so here we are where's the island gone well unfortunately this is the endgame Liam I mean this is this is the ultimate result of some really rapid coastal erosion in this part of the Solomons and in this case this island has completely completely been lost to the sea completely gone under […]

Old Master Painting Conservation
Amazing Wildlife of Alaska(full documentary)HD

Amazing Wildlife of Alaska(full documentary)HD

By Micah Moen 50 Comments May 14, 2019

all three species of North American bears are found here brown bears black bears and polar bears my name is Chris Morgan I've dedicated half my life to the study and conservation of bears now I've embarked upon a 3,000 mile journey into the heart of the Bears world with me my good friend and […]

Ecosystems Conservation

Ecosystems Conservation

By Micah Moen 0 Comment May 14, 2019

a family of elephants raises on the African savannah only elephants and humans are capable of decisively transforming their landscapes as such these pachyderms are the most striking and conspicuous part of the entire savannah ecosystem but for these flatlands to work the presence of a myriad of other less spectacular plants and animals is […]